Why does the moon come in different shapes? Moon phases.
Our planet is beautiful and amazing, there is no such planet in the entire universe. In its firmament, you can observe different luminaries. During the day, the sun shines brightly on Earth, warming all living things with its rays, and at night we see how Moon shines through the windows of our houses. The moon has always been mysterious, in ancient times people watched with fear and trembling as it changes its face. Eclipses evoked even greater horror in them, when the whole Earth was plunged into complete darkness for a short time.
The moon itself cannot emit light, it reflects the light of the Sun. Why do people think that the moon is changing? The moon is a satellite of our planet and revolves around it. We can always see the Moon only from one side, as if it were tied with a rope to the Earth. We can only see the illuminated part of the moon. For about four weeks, the Moon makes its procession around the Earth. What we observe as a change in the appearance of the Moon or phase is actually a change in the illumination of the Moon as seen from the Earth. In four weeks, a full cycle of changes in the appearance of the moon is completed. At the beginning of the cycle, the Moon is new and it is on the same side of us as the Sun.
The side of the Moon, which is turned towards the Earth, is dark and completely lost in the rays of the Sun, in this phase the Moon is not visible in the sky. This lunar phase is called - new moon.
The next phase has a name - the first quarter, and the Moon passes the fourth part of its path, then we see the half-illuminated disk of the Moon.
The third phase of the moon is called full moon, The moon is on the opposite side of the sun and we see the entire disk of the moon illuminated by the sun's rays. The final phase is the last quarter, and the disk of the Moon is also half illuminated.
To correctly determine what phase the moon is in, you need to know one thing interesting rule. If her sickle looks like a bow from the letter "P", then the moon is growing. When her bow looks in the opposite direction and resembles the letter "C", then the Moon is aging. This is very easy to remember and you can always tell if the new moon has just started its journey or the old moon is completing its cycle.
In the sky, sometimes you can observe amazing phenomena called eclipses.
Scientists call a solar eclipse a phenomenon when the disk of the moon completely and completely covers the sun. It is very interesting to observe such a phenomenon, but at the same time you need to take a piece of dark glass with you, through which the eclipse will be visible in all its glory.
Another interesting spectacle in science is called lunar eclipse. This happens when the Earth's shadow overlaps the Moon's disk and a dark circle can be seen instead of the glowing Moon's disk. If the orbits of the Earth and the Moon coincided, we could observe an eclipse of the Sun on a new moon and an eclipse of the Moon on a full moon with each revolution. This does not happen because the plane on which the moon's orbit is located is tilted by five degrees.
The moon moves from one phase to the next in an average of seven days, which is why there are exactly seven days in a week - this is the legacy of the first lunar calendars! True, the first compilers of calendars perceived the phase changes of the Moon as a given of nature, without going into explanations of the causes of the observed...
Moon Phase Now - Java Script Widget
You can open in a separate window
Calendar lunar phases for the whole of 2019 on the page
Celestial coordinates of the moon now:
Equatorial coordinate system
Right ascension of the moon α
: 14h 27m
Moon declination δ
: -9° 22'
Ecliptic coordinate system
Ecliptic longitude λ
: 217° 33'
Ecliptic latitude of the moon β
: 4° 54'
Selenographic parameters of the Moon at the current moment:
Libration of the Moon in longitude L
: 6° 12'
Libration of the Moon in latitude B
: -6° 24'
Proportion of the illuminated surface of the moon: 90.9
%
Moon phase indicator (phase ratio): 0,59
The coordinates of the point above which the Sun is at its zenith -
subsolar point of the moon:
longitude of the lunar subsolar point: 331° 18'
latitude of the lunar subsolar point: -1° 30'
Longitude of the point of intersection of the terminator line and the equator: 61° 17'.
Description of the phase states of the moon
The first ancient lunar calendars were based on observations of the movement of the border of light and shadow, called the terminator, on the surface of the moon. At the same time, four quite clearly visually fixed states were distinguished, called the points of phase transitions of the Moon - the new moon, the beginning of the month; first quarter; the full moon and the last quarter also have their own names and transitional stages of the lunar phases:
Table 1. Phases of the Moon. characteristics of phase states from new moon to new moon
| Phase states (stages) of the Moon | View of the moon | Illumination and configuration | Visibility period | Climax time | Rising and setting of the moon |
|---|---|---|---|---|---|
Folk:: New Moon, Intermoon; the birth of the moon; moonless nights. International: |
0-1% - visible side The moons are completely in shadow Sun, moon and earth lined up |
Due to the proximity of the Sun, it is only visible during eclipses. | Noon | The moon rises and sets with the sun | |
Folk: Young Month, Novik, born Month, sharp-horned Month, early sickle international |
 |
The right side of the lunar disk is illuminated from 1 to 49% Rays: Earth-Moon and Earth-Sun form sharp corner |
From late morning to early evening | Afternoon | The moon rises after the sun with increasing delay |
| First quarter Folk: Half of the Moon, young Half, Edge International: |
 |
The right half of the lunar disk is illuminated (from 49 to 51%) Rays: Earth-Moon and Earth-Sun form a right angle |
From noon to midnight | early evening | Moonrise - exactly at noon, moonset - at midnight |
| Waxing Moon in the second quarter Folk: Full moon, full month, demolition moon International: |
 |
Illuminated area growing on the right side (from 51 to 99% of the visible area of the Moon) Rays: Earth-Moon and Earth-Sun form an obtuse angle |
Afternoon to late night | Early night, late summer evening | Moon rises in the afternoon, sets in the afternoon |
| Full moon Folk: Full Moon, Round Moon, Round Moon International: |
 |
Fully illuminated visible circle of the moon (illuminance between 100 and 99%) Sun, Earth and Moon in line (opposition) |
Visible all night (from sunset to sunrise) |
Midnight | The moon rises at sunset and sets at sunrise |
| Waning moon in the third quarter
Folk: Defective Moon, Moon at a loss, pot-bellied month on the wane International: Waning gibbous |
 |
On the left side, the Sun illuminates 99 to 51% of the visible area of the Moon. Rays: Earth-Sun and Earth-Moon form an obtuse angle |
Visible from late evening to early morning | In the second half of the night | The moon rises late in the evening and sets in the morning. |
| third quarter Folk: Last quarter, older half International: Third quarter |
 |
Exactly half of the circle of the moon is illuminated on the left side (50±1%) Rays: Earth-Sun and Earth-Moon form a right angle |
The moon can be observed after midnight and in the morning | Early morning | Moonrise - exactly at midnight, moonset - at noon |
| Waning moon in last quarter Folk: Old month, old month, flawed sickle, decline International: |
 |
The left side of the lunar disk is illuminated from 49 to 1% Rays: Earth-Sun and Earth-Moon form an acute angle |
The moon is visible from the second half of the night to the second half of the day | Morning | Moon rises in the afternoon, sets in the afternoon |
The popular names of the phases of the moon are taken from Dahl's dictionary, as well as from the everyday speech of the north of the Nizhny Novgorod region.
This collection is replenished, I believe that everyone will be interested in messages about other folk names for the lunar phases (forum - green flag on the left).
Libration of the Moon
Theoretically, from the statement that the Moon is turned to the Earth on one side, it follows that we, being on the earth, can see no more than 50% of its surface. Thanks to libration (the swaying of the Moon visible from the Earth), we can look at its poles, and a little peep at what is happening there from its back side, in general, 60% of its surface becomes visible!
The video image on the left shows the results of a numerical simulation of the libration motion of the Moon. The apparent motion of the Moon is simulated, which can be seen by an observer from the Earth's surface (to enlarge the image, click on it - a new window will open).
As can be seen from the figure, this is a rather complex oscillatory-rotational motion determined by three components: the inclination of the lunar axis + the orbital motion of the Moon + the rotation of the Earth. Due to libration for an earthly observer on the lunar disk, only the zenith point of the earth will be stationary, the point above which the earth is visible at the zenith (blue circle in the center of the lunar disk), and the moon's surface itself is in continuous motion (the parameters of the libration of the moon, just approximately correspond to selenographic coordinates of the zenith point of the Earth). The lilac continuously moving cross is the "Navel of the Moon", the point of intersection of the zero meridian and the equator with coordinates (0°, 0°). Cruise "cross" around the "circle" in reality lasts a whole lunar month!
Libration by latitude
Thanks to libration in latitude, we have the opportunity to consider in turn, then the south, then the north pole of the Moon - during the libration movement, the Moon seems to be leaning towards us, then “trying to look higher” (Fig. 1). Libration in latitude occurs due to the inclination of the Moon's axis of rotation to the plane of its orbit, which is also superimposed by the inclination of the orbit itself to the plane of the ecliptic. Total maximum amplitude A can reach 6.68° ( A\u003d 5.145 ° + 1.5424 °) , at the moment when the Moon is at the point of perigee of the orbit at a minimum distance from the Earth.
Sergey Ov
Fig.1. Libration of the Moon. The libration view of the Moon is shown, in which the lunar South Pole and the eastern part of the reverse side of the Moon are visible (green vertical line).
When the cursor is hovered over, a drawing appears with an angle at which the North Pole of the Moon and its reverse western side (behind the white vertical semi-arc) are visible. The blue circle represents the point on the Moon's surface from which the Earth is visible at its zenith. The lilac cross is a kind of selenographic "Navel of the Moon", a point with coordinates (0°, 0°). (Traditionally, in everyday life it is customary to consider Tycho crater as the "Navel of the Moon" (due to visual similarity), and we have a real selenographic Navel in the figure!)
Libration in longitude
Longitude libration allows us to look at reverse side The moons from the west and east, however, quite a bit on each side (Fig. 1). The optical component of libration in longitude is the result of two phenomena: the uneven orbital motion of the Moon and the parallax caused by the daily rotation of the Earth.
During the orbital motion of the Moon, it accelerates and reaches top speed at perigee 1.052 km/s, it slows down to a minimum at apogee - 0.995 km/s, while the rotation speed around its axis is unchanged. It turns out that at perigee the Moon "does not have time to turn its center towards us" and is forced to show part of its reverse side from the east, at apogee, on the contrary, it seems to rotate faster, "in a hurry", showing the reverse side from the west. The maximum amplitude of such deviations can reach 7.9°.
The parallactic component of libration arises due to the fact that the Moon and the Earth in relation to each other cannot be represented as point bodies at all. The radius of the Earth (6371 km) is significantly comparable with the distance to the Moon - 384400 km!
An observer located at the equator, at the time of the moon's rising, looks at it as if being one degree from the side (for the super moon: Arcsin(6371/356400)/π*180 = 1.02°).
Isn't it an interesting phenomenon? - It turns out that residents of Moscow and residents of Vladivostok, looking at the moon at the same moment, see it differently!
Sergey Ov(seosnews9)
About the Moon and the phases of the moon in the Explanatory Dictionary of the Living Great Russian Language by V.I.Dal
Moon and. satellite of the earth, a celestial body that goes around the earth; month; | sometimes taken as a measure of time in four weeks. On the moon, Cain kills Abel; brother stabs brother with a pitchfork. A clear, steep-horned moon in winter to a cold, in summer to a bucket. A reddish circle near the moon, soon disappearing, towards the bucket. Two such circles, or one dim, to frost; red, towards the wind; interrupted, to the snow. | Campfire glow, lightning, any distant or faint brilliance in the sky. | Moon, in the meaning tongue, sound, rumble, golk, see blow. | hole or hole. Lunar, pertaining to the moon. Moonlit night, light. Lunar month, synodic, lunation w. 29 days 12 hours 44 minutes 3 seconds, full rotation of the moon, from new moon to new moon. lunar year, twelve such months. | ....
Sickle... - ... Moon crescent, narrow cut, stripe, crescent, -shaped
Full Full Moon Wed. the time when the moon is in opposition to the sun, when our earth stands between the sun and the moon, which, therefore, is illuminated in its entire circle, in its entire half; / the most view of the fully illuminated month. After the full moon comes the damage decline, ramshackle, a month in the past; then the last quarter; there is a new moon, a completely dark, invisible month; there the first quarter, young month, born, young, novice; then cut, profit, profitable, and again the full moon./
The moon looks like a full 3 days - on the day of the astronomical full moon, the day before the full moon and the day after.
Month When the moon is born upside down(South), it will be warm in winter, hot in summer; up(on North), cold in winter, windy in summer; the horns are up, but the lower is steep, the upper is sloping, then the first half of the month is cold in winter, windy in summer: if the upper horn is steeper, the lower one is delayed, then the same sign for the second half of the month.
Steep horns of the month - to the bucket; gentle - to bad weather; a dull month - to wetness; clear, to dry; in blue - to the rain; in red - to the wind; with ears - to frost.
The young moon is washing(about the change in the weather at the new moon). Epiphany under a full month - to a big spill(perm.). If a month looks around in three days, then the whole will be bucketful, and when it rains for three days, then all rainy(thief.). The old month God crumbles into stars. On the month you can see how Cain killed Abel with a pitchfork(like a brother stabbed his brother with a pitchfork), spots on the moon. The moon has washed, i.e. rain on the young.
The moon was born, young, new month,
when the crescent of the moon appears after the new moon, for the first quarter; month on the decline, old, dilapidated month, last quarter, decline.
Above the grandmother's hut is a piece of bread? - month. Who looks at the moon(on the weather, on the farm), does not knead in the bowl. look at the month(guess the weather ) - neither reap nor thresh. Look for a month - look into the bins(empty). Shines but does not heat(month), only in vain does he eat bread from God. No matter how the moon shines, it's still not the sun. Like a young moon: it will seem, and again it will hide. What kind of month is this - when it shines and when it doesn't! The month is in heaven, and the number is in the calendar. Gone like a new moon. The red sun would warm, and the month - as it knows. The sun would shine, and the month for nothing. A clear moon would shine for me, and I would strike at the frequent stars. And the moon shines when there is no sun.
Russian month will wait(because he lagged behind, according to the old reckoning).
All night the dog barked for a month, and the month does not know it.
What else did you want(groom) a month in the forehead, and stars are clear in the back of the head?
Round, not a month; green, not oak; with a tail, not a mouse?(turnip).
Month, month, where have you been? - In the woods. - What did you do? - Lyki fought. - Where did you put it? - Under the deck. - Who took it? - Rodion. - Get out! horse.
Under a bright moon, under white clouds, under pure stars etc. fabulous. Monthly related to a month, lasting a whole month or occurring monthly. moon light, Moonlight.
Moon - astronomical characteristics
Characteristics of the motion of the Moon as a rigid body:
The moon is the only one natural companion Earth and revolves around it in an elliptical orbit, with the parameters:
- big semi-axle: 384 399
km (0.00257 AU);
- eccentricity 0,05490
;
- inclination (toward the ecliptic) 5.145° (min 4.99° max 5.30°);
- period of revolution of the line of apses: 8.8504 years;
- period of circulation of the ascending node: 18.5996 years;
- orbital speed: medium 1,023
km/s ( min 0.995 km/s, max 1.052 km/s);
- sidereal period of revolution (by stars) 27,321582
days (27 days 07 h 43 min 06 sec)
- synodic period of revolution (according to the Sun) 29,530588
days (29 days 12 h 44 min 00 sec)
Distance from the Earth to the Moon: the generally accepted average 384400
km:
- in perigee: average 363104
km ( min 356400 km, max 370400 km);
- at apogee: average 405696
km (min 404000 km, max 406700 km)
Moon's own orbital period: 27,321661
days (27 days 07 h 43 min 12 sec).
Lunar tilt:
- to the plane of the orbit: 6.687°,
- to the plane of the ecliptic: 1.5424°.
Rotational speed of the Moon's surface at the equator: 4.627 m/s.
Characteristics of the Moon as an astronomical object:
- average radius of the Moon: 1737.10 km (0.273 Earth);
- polar compression 0.00125 (equatorial radius 1738.14 km, polar 1735.97 km);
- circumference of the equator 10917 km;
- the surface area of the Moon is 3.793 107 km² (0.074 of the Earth's area);
- estimated volume of the Moon 2.1958 1010 km³ (0.020 of the volume of the Earth):
- mass of the Moon: 7.3477 1022 kg (0.0123 of the mass of the Earth);
- average density: 3.3464 g/cm³;
- free fall acceleration at the equator: 1.62 m/s² (0.165 g);
- first cosmic speed: 1,68
km/s;
- second space velocity: 2.38 km / s;
- albedo of the Moon 0.12;
- average surface temperature: -53 °C ( min-233°C max+123°С).
Apparent stellar magnitude from -2.5 to -12.9 (-12.74 average with a full moon).
About the Moon Phase Now browser widget
The "Moon Phase Now" browser widget is based on Java Script, all parameters displayed by the widget are calculated on the user's side directly in the browser, based on the original time provided by the device.
There are three options for the "Photo of the Moon" widget - mini, "Photo of the Moon + informer" - widget and "Photo of the Moon + informer + selenographic parameters" - maxi.
If you do not click the "Refresh" button, then the widget can work offline. Using the "Ctrl +" and "Ctrl -" browser scale controls, you can arbitrarily change the widget drawing scale, increasing or decreasing it to the desired size.
When turning on the modes "Watch" and "Time Machine"
it must be remembered that although this does not consume Internet traffic, browser online calculations parameters and phases of the moon consume energy resources
your device, so you should not enable these modes for a long time on battery-powered devices.
The area of the visible illuminated part of the lunar disk (moon phase) depends only on relative position Earth, Moon and Sun. The lunar phase does not depend on geographical location observer.
You can set at any time numerical value phase of the moon, which is defined as the ratio of the illuminated part of the moon's surface visible from the Earth to common surface lunar disk. Accordingly, the phase of the moon takes values from 0.0 to 1.0. Also, the value of the moon phase can be expressed as a percentage (from 0% to 100%).
At the moments when the configuration of the Sun, the Earth and the Moon forms a right angle, exactly half of the side of the Moon visible from the Earth is illuminated. The moon phase value is 0.5. This configuration is called quadrature. There are exactly two positions celestial bodies, forming a quadrature. The lunar phases at the moments of quadratures are called phases "First" and "Last" quarters.
Note that the lunar phase can be visually observed from the Earth only when the Moon is above the horizon line.
At the full moon, the period of the growth of the moon is replaced by the period of the decrease of the lunar phases. Waning moon. Reducing the phase of the moon.
The period of time between the Full Moon and the New Moon, when the visible illuminated part of the Moon's disk decreases, is called the waning moon.
During this period, the phase of the moon is constantly decreasing, changing from 1.0 at the Full Moon to 0.0 at the New Moon.
The periods of the waning moon in 2012
The periods of the waning moon in 2013
The periods of the waning moon in 2014
Period of change of lunar phases. synodic month.
The phases of the moon change periodically. The period of complete change of lunar phases is called the synodic month (lunar month).
The lunar month begins on the New Moon and continues until the next New Moon.
Due to the influence of various gravitational forces, the elliptical orbit of the Moon around the Earth is not constant. Accordingly, the duration of the synodic month is also not constant. Its duration varies within 29.26 - 29.80 Earth days.
The average duration of a complete change of phases of the moon is 29.53 days (29 days 12 hours and 44 minutes).
Quarters of the lunar (synodic) month
The synodic (lunar) month is divided into four quarters:
- First quarter (young moon)
- Second quarter (Crescent Moon)
- Third quarter (waning moon)
- Fourth quarter (old moon)
Synodic month begins new moon(moon phase value is 0.0). Then a crescent appears in the sky. The visible illuminated part of the Moon begins to grow gradually ("young moon"). After about seven days (a quarter of a synodic month), when exactly half of the lunar disk is illuminated (the value of the phase of the moon is 0.5), the Moon passes the phase first quarter. Then comes the stage of the waxing (growing) Moon, which lasts the second quarter of the synodic month until the onset full moon(moon phase value is 1.0). This is where the growth of the lunar phases ends and their decrease begins.
During the next quarter, the Moon is in a waning stage. After passing the phase last quarter(the value of the phase of the moon is 0.5) The moon continues to decrease and the stage of the “old moon” begins, which is completed by the state of invisibility of the illuminated part of the lunar disk (New Moon).
At the new moon, a new synodic month begins and the process of changing the phases of the moon resumes.
It should be noted that the period of the change of lunar phases (synodic month) is on average 2.2 Earth days longer than the period of revolution of the Moon around the Earth (sidereal month).
Determination of the lunar phase
You can determine the phase of the moon by observing the sky. However, it is not always possible to accurately determine the lunar phase, for example, due to bad weather conditions or the Moon being below the horizon.
A more accurate and reliable way to determine the phase of the moon is the lunar calendar, which is compiled by calculation with a fairly high accuracy.
Lunar calendar for 2015 Age of the Moon
The Age of the Moon is the period of time since the last New Moon.
If we observe the Moon for a month, we will notice that it gradually changes its appearance from a full disk to a narrow crescent and then, after 2-3 days, when it is invisible, in reverse order - from a crescent to a full disk. At the same time, the shape, or phases, of the Moon changes from month to month strictly periodically. They also change their appearance the planets Mercury and Venus, but only for a longer period of time. The phase change occurs due to periodic changes in the lighting conditions of the named celestial bodies in relation to the observer. Illumination depends on the relative position of the Sun, the Earth and each of the considered bodies.
The phases of the moon and its appearance for the earthly observer.
When the Moon is between the Sun and the Earth on a straight line connecting these two luminaries, in this position the unlit part of the lunar surface faces the Earth, and we do not see it. This phase is the new moon. 1–2 days after the new moon, the Moon moves away from the straight line connecting the centers of the Sun and the Earth, and we can see a narrow lunar crescent from the Earth, bulging towards the Sun.
During the new moon, that part of the moon that is not illuminated by direct sunlight is still slightly visible against the dark background of the sky. This glow was called the ashen light of the moon. Leonardo da Vinci was the first to correctly explain the reason for this phenomenon: ashen light arises due to the sun's rays reflected from the Earth, which at that time faces the Moon with most of its hemisphere illuminated by the Sun.
A week after the new moon, the terminator - the boundary of the illuminated by the Sun and the dark part of the lunar disk - acquires the form of a straight line for an earthly observer. The illuminated part of the moon is exactly half visible disk; this phase of the moon is called the first quarter. Since at those points of the Moon that are on the terminator, a lunar day later sets in, the terminator in this period of time is called morning.
Two weeks after the new moon, the Moon is again on the line connecting the Sun and the Earth, but this time not between them, but on the other side of the Earth. The full moon is when we see the full disk of the moon illuminated. The two phases of the moon - new moon and full moon - are collectively called syzygy. During syzygies, eclipses of the Sun and Moon, as well as some other phenomena, can occur. So, for example, it is during the period of syzygy that sea tides reach their greatest magnitude (see Ebb and flow).
After the full moon, the illuminated part of the moon begins to decrease, and the evening terminator is visible from the Earth, that is, the border of that region of the moon where night falls. Three weeks after the new moon, we again observe exactly half of the moon's disk illuminated. The observed phase is the last quarter. The visible crescent of the Moon becomes narrower day by day, and, having gone through a full cycle of changes, the Moon is completely hidden from view by the time of the new moon. The full period of phase change - the synodic month - is 29.53 days.
From the new moon to the full moon, the moon is called young or growing, after the full moon - old. It is very easy to distinguish the crescent of the growing moon from the waning crescent of the old moon. If (in the Northern Hemisphere of the Earth) the appearance of a sickle resembles the letter C, then the Moon is old. If, having mentally drawn a wand, you can turn the moon crescent into the letter P, then this is the growing Moon.
The planets Mercury and Venus are also observed in different phases, which is clearly visible through a telescope. People with exceptionally sharp eyesight can observe the phases of Venus even with the naked eye. The telescope clearly shows how the view of the crescent of Venus changes. After the invention of the telescope, the observation of this very phenomenon served as proof that all planets are spherical and visible due to reflected sunlight.
> What are the phases of the moon
Moon phases- change in the level of illumination of the Earth's satellite. Description of the new moon, waxing and waning moon, full moon with photos of solar and lunar eclipses.
From Earth, you can watch the moon go through a series of phases. Of course, it's all about the fall of the sun's rays. The satellite revolves around the Earth, which revolves around the Sun. We see only part of the moon, but one half of it is always illuminated. Spends 27.3 days on the orbital path.
In the process of the lunar phases, we encounter the Growing Moon - it is gaining illumination and the Waning Moon - the brightness is falling. Let's take a closer look at the phases of the moon.
- - the illuminated side is located away from us. The satellite and the star line up along one side, so we see the hidden half. At this point, you can watch solar eclipse, if the moon passes in front of the star and throws on earth's surface shadow.
- Crescent is the first observed arc. For the northern hemisphere, the light edge will be located on the right.
- The first quarter is half lit. That is, the satellite and the star form a 90-degree angle with respect to us.
- - more than half covered, but not yet complete.
- - maximum brightness. We see that the satellite is fully illuminated and can guarantee lunar eclipses.
- - a little more than half is lit, but the radiance is falling.
- Last quarter- half is illuminated, but already the opposite side.
- Crescent- the end of the lunar cycle.
If you live in the southern hemisphere, then the satellite begins to be illuminated on the left. Interestingly, the alignment of the Sun, Earth and Moon leads to amazing phenomena.
If we are faced with a full moon passing through the earth's shadow, then this moon eclipse. The satellite is darker and filled with a bloody glow. If this is a new moon between a planet and a star, then we have a solar eclipse.
It seems that we should observe these amazing phenomena every month, but this is not so. The lunar orbit is inclined relative to the sun, so most of the time the satellite is located above or below the star. On the bottom photo You can study the phases of Venus.
Surprisingly, Venus also goes through phases. If the planet is located on the other side of the star, then we observe an almost full disk. If it is on our side, then a thin crescent is shown. On our site you can always find out the phases of the moon today or use a special lunar calendar, where the phases of the satellite are scheduled for the whole year.
Related publications
-
Types (types) of sweeteners and sweeteners: an overview of sugar substitutes
The peak of popularity of sugar analogs in our country fell on the 90s. Who does not remember the small boxes, from which, when you click on ...
-
Comparison of sweeteners
Having made the decision to eat right, the first thing to do is give up sugar. This does not mean that you need to deprive yourself of...