UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
How it Works
Ask a Question
Search Topics
Our Scientists
Science Links
Contact Information
Does the sky ever end, because after sky there is space? But is space is still part of the sky?
Question Date: 2004-03-23
Answer 1:

The earth has an atmosphere that is about 60 miles thick ... Beyond that , we call the next environment space.

There is interplanetary space, interstellar space, intergalactic space. As far as anyone knows, it seems like it goes on... at least for 1026 meters. That is 1,000,000,000,000,000,000,000,000,000 meters.

A meter is about a yard. Your question is the subject matter of cosmology. Many people from the first stone age peoples to today have asked this question. No one really knows the answer, but we can distinguish between the very thin part of the Earth's upper atmosphere and true space.

I hope this helps.

Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2017 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use