If the universe is expanding at the speed of light and light travels at the speed of light then how are we still able to see light from the galaxies that are moving away from us?

Md Ariful Islam

0 like 0 dislike
1 views
Share with your friends

1 Answers

Md Ariful Islam

Call

The universe isn't expanding at the speed of light. It's expanding at a rate of 68 kilometres per second per megaparsec. The rate of expansion isn't a speed because the greater the distance between two things, the more it's expanding.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Are new galaxies able to form on the edge of the expanding universe?

It seems that you are thinking of the universe as expanding out from a central point in three dimensions and therefore having some kind of edge. As far as we...

1 Answers 1 views
Current scientific models say the Universe is still expanding. Are there any theories to explain what the Universe is expanding into?

The universe is expanding at an increasing rate, the the three theories as to what is going to happen next are: "The Big Rip": The universe will expand to the...

1 Answers 1 views
How do us humans know that there are millions of other galaxies? If galaxies are millions of years apart, how do scientists know that there are billions of other galaxies and that andromeda is the closest?

There are a ton of extremely powerful telescopes both here on Earth and in space that is capable of looking billions of light years far. And we can see a...

1 Answers 1 views
If the universe is expanding, are there more structures such as galaxies, stars, etc., towards its center rather than at the newer edge?

If you think of an enlarging gas balloon, the galaxies are on the surface of the balloon, moving away from each other. The Universe is supposed to be finite and...

1 Answers 1 views
Edwin Hubble discovered the universe was expanding by measuring the light of distant stars, and by showing that those distant stars were moving further away from the earth. If this is so, then why is the Andromeda Galaxy moving closer to us?

Andromeda is being pulled apart by the expanding universe. But the gravity between the Milky Way and Andromeda is strong enough to overcome this expansive force. Gravity is pretty...

1 Answers 1 views
How can galaxies collide in an expanding universe?

Galaxies tend to clump together into groups or clusters. A group can consist of a small number of galaxies which are gravitationally bound to each other. Clusters are bigger groupings...

1 Answers 1 views
Why do galaxies collide if the universe is expanding?

Although the universe is expanding this only means that larger structures are getting further apart. Galaxies tend to form into groups which are gravitationally bound. Galaxies can also form into...

1 Answers 1 views
The Hubble telescope captured galaxies in the eastern direction of the universe. Images came back proving that galaxies are made up of different colors. What would explain the reason for the make of colors in galaxies?

Galaxies early on in their lives are actively forming hot, new stars and appear more bluish. Older galaxies are forming fewer new stars and their constituent stars are older on...

1 Answers 1 views
Galaxies are millions of light years away and we are able to capture images through cameras in telescopes. Do scientists leave the telescope pointing at space until the galaxies slowly start to appear? Or do they zoom in into space?

A few galaxies are bright enough to see something of them with the naked eye. For example, in the northern hemisphere we can see the centre of the Andromeda Galaxy...

1 Answers 1 views
If gravity clumps matter together into galaxies, why are there separate galaxies? Wouldn't all matter in the universe be in one clump?

Gravitational force is a central force that pulls things radially inward. However objects, in general, have non-zero tangential components which contribute to their Angular Momentum. Angular momentum is a conserved...

1 Answers 1 views
X