Yes, all of the planets in from the earth display phases when viewed form earth.
Mercury does not have any moons.
Both Mercury and Venus, being closer to the sun than us, will show phases. When Venus is at is brightest it is generally just a bit over half full. If you were on Mars, you would note phases on earth.
Yes, all of the planets in from the earth display phases when viewed form earth.
mercury
Mercury, Venus
-- The six planets visible to the unaided eye are Mercury, Venus, Earth, Mars, Jupiter, and Saturn. -- The Earth displays no phases at all. -- All of the remaining five can display gibbous and nearly 'quarter' phases. -- Only Mercury and Venus can display crescent phases.
Yes. Mercury and Venus have phases. We can't really observe phases for the outer planets, because we always see the bright side, since we are on the same side as the Sun. Any asteroid that gets near enough could also have phases.
Mercury, being an inner planet, does not exhibit phases like the moon does. However, it does appear to go through phases when observed from Earth due to its changing position relative to the Sun.
Solid, liquid, vapor and plasma
Mercury has three main phases: "new," "first quarter," and "full." During a "new" phase, Mercury is between the Earth and Sun, so it appears dark. During the "first quarter" phase, we see half of Mercury illuminated. And during the "full" phase, the entire side facing Earth is illuminated.
Yes. Specifically, such phases can be seen on Mercury and Venus. Mars and other planets that are further out are "almost-full", due to the fact that they are further away from the Sun. You could also see phases on asteroids, if they are in an appropriate position, and you use telescopes that are powerful enough.
Yes, some planets in our solar system, like Venus and Mars, exhibit phases when observed from Earth. These phases are caused by the changing relative positions of the planets and the Sun as viewed from Earth. Mercury and Venus can display crescent phases, while Mars can show gibbous phases.