While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye.
While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye.
Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.
Stargazers in parts of the U.S. have a fleeting opportunity this month to catch a rare celestial phenomena—a "parade" of ...
Thanks to new research techniques published today, scientists say that "our understanding of why Mars is red has been ...