Want to buy a green laser but need help choosing one? This guide will help!
The post All I Want for Christmas is a Green Laser: How to Choose and Use One appeared first on Universe Today.
Don’t know much about history? How about the future? A new infographic by graphic designer Martin Vargic portrays both past and forthcoming events in our Universe, from the Big Bang to the death of our Sun. The graphic is color-coded and shows “significant events in cosmic and natural history.” It also illustrates how briefly humanity […]