When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A new generation of optically "fast" telescopes, connected to compact high-resolution video ...

What is the relationship between tides and gravity? Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked?

Astronomy: Last year the International Astronomical Union made it official and finally named one of the lunar features you used for navigation as Mount Marilyn, after your wife. Could you tell us ...

The vastness of space and the puzzling nature of the cosmic objects that occupy it provides no shortage of material for astronomers to ponder. To round up some of the most enduring mysteries in the ...

This review, “Orion’s Atlas 8,” appeared in the May 2004 issue of Astronomy magazine. Whether it’s clothing, hair, or musical groups, styles come and go. What’s “hot” today may be “not” tomorrow, only ...