The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Although the planets won't form a perfectly straight line, their simultaneous visibility in a single part of the sky will be ...

Venus, Saturn, Jupiter and Mars will appear to line up and be bright enough to see with the naked eye in the first few hours ...

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the ...

Six planets grace the sky this month in what's known as a planetary parade, and most can be seen with the naked eye ...

Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that ...

Jupiter's Great Red Spot storm, which usually appears dark-red, can be seen shining a lurid blue color in an ultraviolet ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Asteroid 14 Irene reaches opposition at 2 A.M. EST within northwestern ... Over in the east, the icy moon Europa transits the face of Jupiter tonight, beginning around 8:25 P.M. EST.

Venus, Saturn, Jupiter, and Mars will align, creating a stunning display shortly after sunset. Mars shines brightly at opposition Mars ... While Uranus and Neptune will also be more noticeable ...

CARACAS, Venezuela — Venezuela’s government on Thursday announced a $100,000 reward for information on the whereabouts of Edmundo González Urrutia, the opposition candidate who says he ...