It’s not just observing star clusters or planets that creates delight. Celestial knowledge can be just as exciting, especially when it comes with weighty implications. This month, let’s consider 10 ...

Right now it's free -- but it can change quickly. There are 2 review -- 1 bad and 1 good. I do not have my iPad with me to look at the book myself. Since it's free, get it and if it's lame, just ...

This is a course in basic astronomy, which will provide an overview of our current understanding of the universe around us. Topics will include the origin of the universe, galaxies, stars, planets, ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. After guiding us across the universe, astrophysicist and Space.com columnist Paul Sutter closes ...