why do we see the same phase of the moon always?
405607
The phases of the moon occur due to its relative position to us and the sun. The sun always shines on half of the moon (except on the rare occassion when the earth is in the way causing a lunar eclipse). If the moon is behind the earth, we see it as a full moon as we can see all of the lit side. When the moon is beside the earth, we see half the lit side and half the side in shadow, which appears to us as a half moon. When it's in front of the earth its a new moon which isn't visible as we can only see the side of the moon in shadow. In between the stages we see the crescent waxing and waning moons.
473429
Because the moon reflects light from the sun.
61467
The moon spins about an axis. The axis  is almost perpendicular to the plane of the moons orbit around the earth. The period of spin (time to complete one rotation about the spin axis) is equal to the period of one revolution around the earth.\n  The result is we see one side of the moon.\nFor many people this answer is not suffice to understand.\nImagine a cubical building in a plain ground. The four vertical walls are marked A,B,C,D.  Imagine the building to be the moon and we are standing infront of the wall marked A. Let us go round the building to see the other walls in the order of ABCD. When we have finished quarter round we can have the full view of the wall B. But imagine  that the building rotates itself such that when we finished quarter round it also has rotated quarter round about itself. We will see only the wall A. If the things continue like this we can never see the other walls.When we complete one round the building completes one round so always we see only the wall A.\n Due to librations actually we can see 59% of the moon instead of 50%
1040841
The reason is that the Moons rotational period is exactly the same as the period of revolution. But it is not a coincidence.\n\nTidal forces from the earth cause a torque on the rotation of the moon. Over time this has caused the moon to slow its rotation so that we only see the same side.\nOur Moon is not the only one like this.\nThe tidal forces of the sun have slowed mercury down, so that it revolves every 59 days. Eventually it will be like the moon and show the same face to the sun.\n\nIn much the same way the moons tidal forces are doing this to the earth as well, However being that the earth is much more massive than the moon, it has not slowed the rotation nearly as much as the earth has slowed the moons rotation.\n\nMost moons in the solar system do not do this (yet). But over  a very long period of time, more moons will be slowed and show only one side. but that will take billions of years.
153461
If the sun and the moon are both visible at the same time, then the first answer of course would be daytime.  However, for the moon to be visible during the day, it has to have risen somewhere in the 6 am - 6pm range.  this means that the moon can be in any phase from new moon through first quarter and almost to full moon.  So, the final answer to the question would be that when the sun and moon are both visible, it is called daytime during the first half of the lunar cycle.
920073
I love it and I watch the phases of the moon all the time\n\nhttp://www.calculatorcat.com/moon_phases/moon_phases.phtml\n\nhttp://www.netaxs.com/mhmyers/moon.tn.html\n\nhttp://tycho.usno.navy.mil/vphase.html\n\nhttp://aa.usno.navy.mil/faq/docs/moon_phases.html\n\nIf you get a telescope you can see the craters of the moon\n\nThe moon is a lovely jewel
439809
The moon is basically a great big lump of dull coloured rock that floats around quarter of a million miles from us.  Just like earth, it's illuminated by the sun so what you're seeing is reflected sunlight.\n\nIt can appear as different colours due to the atmosphere here on earth.\n\nWhen the moon is up in the sky you're looking at it through a thin layer of atmosphere but when it's low on the horizon you're looking through a greater amount of atmosphere.\n\nThe way that our atmosphere breaks up sunlight into differnt colours (Rayleigh Scattering) affects the colour that the moon appears to be.  So too can particles in the atmosphere - particularly dust and volcanic ash which often gives it a reddish tinge.
882017
No one who has answered so far got it right.  The answer is TRUE, and the reason is because the moon rotates on its axis in exactly the same amount of time it takes it to make one revolution around the earth.  No one seems to get this.
1166386
The shape of the moon does not actually change, but it is the shadow of the earth that gives the illusion. The moon revolves around the earth due to which we have full moon, no moon and half moon periods as it travels betweeen the shadow of the earth. During the period from no moon to full moon, the earth is in between the moon and the sun due to which the earth's shadow falls directly on the moon and thus we cannot see the illuminated part of the moon.As the earth graduallly moves away from the position, we can see the illuminated part of the moon which appears in the shape of a crest.  Also due to the non existence of atmosphere on the moon, there is distinct difference in the illuminated and the dark part of the moon. During the period from full moon to no moon, it again moves from the shadow of the earth and thus at one point is completely overshadowed by the earth and doing the disappearing act.
663878
A full moon is the phase when the entire circular shape of the moon is visible.\n\nA new moon is the phase when no part of the moon is visible due to the position of the earth.  It happens to block the light from the sun so the moon is not able to be seen.\n\nsilly fact- the term "blue moon" like "once in a blue moon" refers to the unusual event of having two new moons in a calendar month.
355451
the moon is always there, but it is probably a new moon, a phase of the moon where the sun doesn't shine light on it at the popsition that we can see it. The other stages include combinations of waning, waxing & gibbious and cresent
306218
INTRESTING FACT IF YOU ARE AT LEVEL GROUND SUCH AS FLA,KEYS THE FULL MOON WILL ALWAYS RISE AT THE EXACT TIME THE SUN THE SUN IS SETTING. THE MOON WILL RISE PERCISLEY YOU CAN CHECK THE EXACT TIME LIKE AROUND 56 MIN LATTER EVERY NITE UNTILL THE CYCLE IS COMPLETE THEN ONCE AGAIN THE FULL MOON WILL RISE EXACTLY AT SUNSET FOR EVER AND EVER WATCH THE MOON RISE NIGHTLY AND IT WILL PROVE ME RIGHT. DONT KNOW IF THAT ANSWERED QUESTION BUT THATS HISTORY
208149
The truth is, the moon obviously orbits the earth, right? So you look up and see the moon in the time of day, it is at an angle where other parts of the Earth can see it, sometimes the moon is here in the day time because it is on the same side as we are facing the sun, if it is during the night time, we see the moon because it has orbited behind the Earth, it takes the moon a certain amount of time to get around the Earth.
1027317
You mean the moon and the sun, which is true\nsometimes, but there are also eclipses where\nthe moon is smaller than the sun, so a small\nring of light is left uncovered (called an annular\neclipse)...\n\nBy a stroke of amazing coincidence, both the\nmoon and the sun are approx 108 times as\nfar from the earth as their diameter, so they\nappear the same size in the sky... 108 is a\nmystic number in spirituality, so I doubt if this\nis really a coincidence!
370080
Finally a good question.\n\nThe Moon's apparent size being very similar to the Sun's apparent size is a coincidence. But the Moon doesn't always cover the Sun during an eclipse, look up annular eclipse (the looks smaller), and when it does cover it, it is usually a bit larger.\n\nBut now let's talk about the main question.\n\nWe always see the same side of the Moon because its during its full rotation around the Earth it also makes a full rotation around its axis. This is not a coincidence. There are several satellites in the solar system whose rotation is synchronized with their rotation around a planet (eg. Io around Jupiter, Charon around Pluto but also Pluto around Charon :-) etc. ).\n\nThe Earth's gravitation decreases with the distance from its center. So the Moon's opposite side (which is further away from the Earth) is attracted less by the Earth than the side which is closer. This results in the Moon being a little bit deformed along the Earth-Moon line.\nThe Moon is a little bit shaped like an egg: if it would rotate faster, it would not be elongated towards the Earth anymore, and the Earth's gravitation would try to turn it back. This is very difficult to explain without the opportunity to draw figures ... but anyway, search for tidal locking on the net, I hope you'll find a good, illustrated explanation.\n\n\nEDIT: In one answer someone said that Mercury is in a similar relation with the Sun ... this is not exactly true, as the ratio of period of its rotation and the period of its orbiting is 3/2.\n\nMercury also has an elongated shape: due to this 3:2 resonance, at its perihelion, the axis of its elongation is always parallel with the Sun--Mercury axis.\n\nEDIT2: As I said, the apparent size of the Moon is just a concidence. Other planents do get total eclipses. What does a total eclipse mean? It means that a moon casts a shadow on the planet: http://www.c-science.com/txt/images/1999/990428unssx2.jpg\n\nThere is a nice program calles Celestia, which can show you the eclipses caused by various moons on various planets (3D animations): http://www.shatters.net/celestia/
463189
The earth orbits the sun; the moon orbits the earth. The cycles of rotation are different meaning that the moon will orbit the earth many times every year. This means that it will very often be in a position to be seen during the day. The moon itself has no axial rotation so on earth we always see the same side of the moon.
642612
The moon is not geosynchronous.  Thus, its relative position in the sky changes rapidly.  Without manmade satellites in geosync. orbit, and with transponer facilities on the moon instead, people with satellite dishes would have to constantly reaim them to keep their signal.\n\nI do believe the moon always shows the same face towards Earth.