With two months to go before flight, the Apollo 13 prime crew of James Lovell, Thomas Mattingly, Fred Haise, and backups John ...

Ahead of its dance with Saturn on Feb. 24, Mercury should be seen on Feb. 19 at magnitude -1.2 with binoculars 20 minutes ...

Today, the behind-the-scenes work matters most — focus on the details and don’t worry about making a splash.

Saturn’s rings are an arresting sight even through modest telescopes. The planet is made mostly of hydrogen and helium whereas the rings are billions of pieces of mostly bright-white water ice and ...

The Sun is slowly setting, it is a beautiful clear sky, and I am in the northern Prague district of Ďáblice inside a long wooded park called Ďáblický háj, which is approximately 60 hectares in size.

NASA’s Cassini spacecraft, which orbited Saturn from 2004 to 2017, took many dramatic images of the rings’ shadows on Saturn.

"There are times when I've seen it and I'm thinking, 'Why is the hair standing up on the back of my neck right now?'" — Tom ...