What is a Red galaxy?
referring to astronomy and space exploration
The universe is expanding, so things are moving away from each other. The farther apart, the higher the relative speed, in general. The light from a galaxy that is moving away from you is shifted toward longer wavelengths, so visible light gets shifted toward the infrared. So galaxies far away appear more red than they would up close. Red galaxies.
It is known as Unltra-red galaxies. Unltra-red galaxies may be cosmic 'missing link' Space telescope sees them at the for reaches of the universe. The astronomers spotted four remarkably red galaxies near 13 billion light - years from Earth. Researchers says, the four galaxies are grouped together and appear to be physically associated, rather than constituting a chance alignment of like objects. Astronomers says, "In a sense, these galaxies might be a 'missing link' in galatic evolution".
There are three main reasons why a galaxy may appear red, researchers said, First it may be extremely dusty. Second, it could contain many old, red stars. Or third, the galaxy may be extremely distant, in which case the expantion of the universe has stretched its light to very long (and very red) wavelengths.
by Anjili5 years ago
Our galaxy will collide with another one in 4 billion years time, says NASA. What do you think?
by Justin McMarshall7 years ago
What is your view on creation?There is a lot of speculation on just what might have casued the the universe and everything else contained in the heavens. What is your view. Please be a specific as possible. I would love...
by Cheri Bermudez6 years ago
Do you believe life exists in the universe (other than on Earth)?
by Paula2 years ago
What is the age of the universe?What are your thoughts on the age of the universe? Why do you think it is as old as you think it is. Perhaps it is a range of time. To add, what is your worldview...
by Alexander A. Villarasa5 years ago
Scientists of all stripes, but most specifically physicists (astrophysicists, theoretical physycists, and the ocassional metaphysicists) have posited that based on the perplexities and complexities of...
by Seckin Esen8 months ago
What do you think about the future of the world?Your predictions about what will happen in the world in the future?
Copyright © 2018 HubPages Inc. and respective owners.
Other product and company names shown may be trademarks of their respective owners.
HubPages® is a registered Service Mark of HubPages, Inc.
HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.