Question

Edwin Hubble used his telescope to show that all objects in all directions are moving away from us.
TRUE OR FALSE??

Answer 1

Hubble determined that galaxies are actually outside of the Milky Way, and that those galaxies are all moving away from each other. Object inside our own galaxy are not all moving away from us.

Answer 2

Actually, on a large scale galaxies are all moving away from each other. But not always on smaller scales, like Andromeda and the Milky Way are moving toward each other.

Answer 3

so true >?

Answer 4

So, I'm not sure if your answer is True or False!

Answer 5

can u answer this ?A star’s parallax angle is 0.8. How far away is the star in parsecs?
0.8
1.25
1.6

Answer 6

What are the units of 0.8 ?

Answer 7

If we see a galaxy that is 100 light years from us and it appears red, that means that the galaxy is actually red in color.
true or false?

Answer 8

If the angle is in arcseconds, then:
d = 1/p distance = 1 / parallax angle

the distance will be in parsecs

Answer 9

These are wierd questions. If you are talking about all the wavelengths of light coming from the galaxy being shifted toward the red side of the spectrum, it means the galaxy is moving away from us, but that doesn't mean it will necessarily look red.

Answer 10

Light from very distant galaxies gets stretched out to longer wavelengths by the expansion of the universe, so it might look red to us, but it started out blue, for example. But that only happens with galaxies that are a few billion light years away.