What did the night sky look like 4 billion years ago?

Subject: What did the night sky look like 4 billion years ago?

Date: Fri Aug 1 17:35:40 2008
Posted by Teddy
Grade level: grad (science) School: UCSB
City: Santa Barbara State/Province: CA Country: USA
Area of science: Astronomy
ID: 1217637340.As

Message:

If the universe is somewhere between 12 and 16 billion years old, would the stars have been noticeably closer together/denser than they are today for an observer looking up from the Earth 4 billion years ago? More generally, how far back in time would a human observer have to go before the night sky begins to look qualitatively different from how it looks today?

Re: What did the night sky look like 4 billion years ago?

Current Queue | Current Queue for Astronomy | Astronomy archives

Try the links in the MadSci Library for more information on Astronomy.