From Youtube, "The observable universe is a big place that has been around for more than 13 billion years. Up to two trillion galaxies made up of something like 20,000 billion billion stars surround our... continue reading
posted by w1ndex 3 years 9 months 2 weeks ago • 211 views • 11:41search results matching tag: star scale
» channel: learn
Search took 0.001 seconds
- 1
Videos (1) | Sift Talk (0) | Blogs (0) | Comments (72) |
- 1