Why do objects in space shine?
I'm not real sure but I THINK that the objects in the solar system such as "the earth's moon" gives off light reflected from the sun to the moon,same thing goes for other objects and planets....i study outer space a lot so i know this stuff very well :D
Which of the celestial objects can actually shine and how is it that those that can't still appear to shine?
Space isn't occupied by matter, so it has no temperature by itself. If a comet or asteroid is orbiting the sun, it's actually made of matter and has a measurable temperature as it proceeds in its orbit. (The sun can shine on its surface and sunlight can warm the surface.) Because space has has no way to transfer heat away from objects occupying it by conduction or convection, since it has no matter to do…
It does shine in space, depending on where in space you are depends on how bright it is to you. If you were in another solar system like ours it would just appear as pinprick of light just as we see stars in our night sky. If you were on Mercury it would shine very very bright because you would be much closer to it. The sun seen from the International Space Station, looks different…
Non-luminous objects are seen by directing a source of light at them and observing the light that reflects from them. Examples of this process include: -- Light a candle or turn on the electric light in your room at night. -- Shine a flashlight on a rock at night. -- In order to see the moon, shine the sun on it.
For a great number of larger bodies in space, the only instrument you need to use is your eyes. The Sun and the various stars shine brightly, and can be seen for trillions of miles. Even the larger non-luminous bodies, such as the Moon and the nearby planets, are easily visible. For more distant or smaller objects, a telescope may be required.