thinksnack1

Posted by Jennifer Morrison

The universe is estimated to be approximately 15 to 20 billion years old. Earth, to be 4.6 billion years old.

April 30th, 2004 | Residents, Think-snack, Reading Room, Jennifer Morrison

4 comments

By who?
How do they know?
What do they think there was before the universe?

Comment by Adam
Tue 04 May, 2004
@ 4:43 pm

-By human scientists. Such as Carl Sagan.

-They look through huge telescopes. A chap called Hubble figured out how to measure the distances to the galaxies after World War I. He realised that the galaxies are receding from us and that the more distant the galaxy the greater its speed of recession. The universe is expanding, carrying the galaxies with it. The Big Bang was discovered!
-To the last question, I don’t know!

Comment by jennifer morrison
Tue 04 May, 2004
@ 9:40 pm

OK - thanks.

Before the universe - who knows. Maybe it’s the word ‘before’ and our perception of time that’s the problem here.

Comment by Adam
Thu 06 May, 2004
@ 3:14 pm

I agree. We’re so keen to think of time in a completely linear way. If offered two tape measures - one that is straight and one that follows a random line - I think we’d all go for the first one. But just because something’s useful doesn’t mean can be relied upon all the time.

Comment by Baz
Thu 13 May, 2004
@ 1:56 pm