Can asteroids/meteors be blue shifted, or is that only with galaxies?

On a purely theoretical level, ANYTHING moving towards you is blue-shifted. If you're driving on a two land road, the traffic coming the other way (towards you) should be blue-shifted.

However, at anything less than near relativistic speeds (the expansion of the universe), this is such a itty bitty insignificant amount (talking like a trillion trillion trillionth of a nanometer here) as to be virtually impossible to see.

So yea, an asteroid headed towards the earth would fall into that same immeasurable amount as a car, but on the pure theory level, yes, it IS blueshifted.

Everything that emits, or even reflects, light is blue and red shifted, at the same time. Most things aren't noticeable. But even a guy walking down the side walk is blue and red shifted. If you're standing behind him he's red shifted, if you're in front of him and he's coming towards you he's blue shifted. You'd need some serious instrumentation to be able to notice it, but it's there regardless.

Asteroids and meteors do not travel even nearly fast enough to blue or red shift the light reflected off of them.

In order for us to see asteroids they must be very close to Earth. On such a small distance a blue shift is hardly visible.

In the case of asteroids and meteors outside our atmosphere, that light would be reflected light from the sun. But yes, if the object was coming toward us, the reflected spectrum should be blue-shifted compared to the spectrum of light directly emitted by the sun.

Any light reflecting or light emitting object will blue shifted, or red shifted with respect to an observer by moving closer or farther. It is difficult to detect, if the speed difference is small.

I tend to treat my asteroids topically with salve or ointment but suppositories do work well if you have the really bloody ones. You should probably stop eating so much meat and remember when you poop it's not about forcing it out but instead its just about relaxing and letting your turds leap out on their own. Before you know it, your turds will be running out of you like it was the final bell on the last day of school in your anus. I hope this helps amigo I know this is a crippling condition that requires hand washing a lot of underwear but in time you will come to think of your asteroids as friendly visitors, like a meteor that flies by just to say hello, that sorta thing. Yeah - it''s gonna be okay.

Meteors and asteroids don't usually emit their own light, unless they enter the atmosphere.

Sure they could, but the don't emit light - they only reflect it... so, the light we'd see would likely be reflected, and blue- or red-shifted sunlight.

Anything moving toward us that is emitting or reflecting light ... that light will be blue shifted.