1) How is a stellar spectrum obtained at the telescope?
2) Why is the search for dark matter important to cosmologists?
3) Describe the main arguments for the big bang theory.
Can anyone help please!
2007-05-28 22:31:13 · 3 answers · asked by Ash 2 in Science & Mathematics ➔ Astronomy & Space
Sure. I can help. Read your book and start paying attention in class ☺
A stellar spectrum is obtained by using a spectrometer.
'Dark matter' may represent a significant amount of the total mass of the Universe and have profound consequences on stellar evolution.
The main argument is that everything appears to be moving away from everything else.
Doug
2007-05-28 22:37:15 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋
1. With a spectrascope
2. They need evidence of it to prove theories.
3. Everything is moving away from the big bang. Time had to have a beginning, at which point the laws of nature had to change enough that it could be considered a big bang regardless of its other details.
2007-05-29 05:37:35 · answer #2 · answered by x4294967296 6 · 0⤊ 0⤋
3) http://en.wikipedia.org/wiki/Big_bang_theory
2007-05-29 05:35:45 · answer #3 · answered by junaidi71 6 · 0⤊ 0⤋