Home » News & Blogs » What is Space?
Bookmark and Share
Ask an Astronomer

What is Space?

23 Jun 2016, 10:11 UTC
What is Space?
(200 words excerpt, click title or image to see full post)

Question: What is space? What is it that can expand, warp, etc. — Doug
Answer: This is a very difficult question to answer. Space is not a “thing” or something that you can associate with “substance”. One way to describe space is to think of it as a three-dimensional construct within which the Universe exists. A perhaps more practical definition of space would be that which you can measure with a distance measuring device (like a tape measure), such as the distance between two objects.
Jeff Mangum

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod