0
How does the light that astronomers see from distant stars and galaxies tell htem that the same atoms with the same properties exist throughout the universe?
Wiki User
∙ 13y ago
We determine the types of elements contained in the star or within the corona by analyzing the spectrum of the light we receive. Each element will radiate at a set of specific discreet frequencies, and the frequencies they radiate tell us what the element is, and how deeply ionized it is. The spectral analysis is exact; we can even determine the proportions of the elements that we see by the relative brilliance of their light.
But there IS one thing that the spectrum cannot tell us; is this a normal matter star, or an anti-matter star?
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What kind of scientist studies the universe and the planets galaxies stars and other objects within it?
Astronomers and physicists.
Are most galaxies spread uniformly throughout the universe?
Yes, The Big Bang theory says all galaxies are moving outward and the universe is also expanding due to the explosion.
What is the difference between galaxies and the universe?
A universe is a very big realm of darkness with galaxies in it. and there are billions of galaxies in the universe! One of those galaxies is our solar system, and in that solar system is our planet. There probably is even more then just one univserse. O_o Well... Galaxies are within the universe and a universe is defintly bigger then a galaxy
How do astronomers locate other stars trillion light years away?
They can't. The universe is only about 13 billion years old. If there are galaxies a trillion light years away their light has not reached us yet and due to the expansion of the universe, never will. At the edge of what we call the observable universe we cannot make out individual stars, but we can detect galaxies using infrared telescopes.
Diameter of the universe?
With current technology, astronomers are able to detect objects (galaxies) out to about 14 billion light years from us in every direction. We don't know what's farther than that.
Will astronomers do all the redshifts of the 100 billion galaxies in the universe?
Perhaps in the future astronomers will do all the redshifts of the 100 billion galaxies in the universe.
Will astronomers measure all the distances of the 100 billion galaxies in the universe?
It is possible that someday astronomers will measure all the distances of the 100 billion galaxies in the universe.
Will astronomers name all the designations of the 100 billion galaxies in the universe?
It highly likely that astronomers will name all the designations of the 100 billion galaxies in the universe in this lifetime.
Will astronomers get all the J2000 coordinates of the 100 billion galaxies in the universe?
Maybe someday in the future astronomers will get all the J2000 coordinates of the 100 billion galaxies in the universe.
Will astronomers measure all the sizes of 100 billion galaxies in the observable universe?
It is possible that astronomers will measure all the sizes of 100 billion galaxies in the observable universe.
How can astronomers get all the morphological types of 100 billion galaxies in the universe?
Astronomers can get all the morphological types of 100 billion galaxies in the universe by help of the merger rate.
How can astronomers name all the designations of the 100 billion galaxies in the universe?
Astronomers can name all the designations of the 100 billion galaxies in the universe using their mass, age, and metallicity.
How can astronomers make an atlas of at least 100 billion galaxies in the observable universe?
No. Because it will be impossible for astronomers to make an atlas of at least 100 billion galaxies in the observable universe.
Will astronomers have all J2000 coordinates of 100 billion galaxies in the observable universe?
It is possible that someday astronomers have all J2000 coordinates of 100 billion galaxies in the observable universe.
Will astronomers measure all the distances of 100 billion galaxies in the observable universe?
Someday astronomers may have measured all the distances of 100 billion galaxies in the observable universe.
Will astronomers classify all the shapes of 100 billion galaxies in the observable universe?
Someday astronomers may have classified all the shapes of 100 billion galaxies in the observable universe.
How do astronomers find out about changes in galaxies over time?
Astronomers can watch galaxies that are far away. Since the light takes billions of years to reach us from the farthest known galaxies, they would be watching galaxies in the early Universe. It turns out, from such observations, that the Universe is changing.
