Astronomers and amateur stargazers will be in for a treat the last week of February when a seventh planet will join six others in a planetary parade.

Mars, Venus, Jupiter, Saturn and Mercury will shine bright enough for the naked eye to see, and you can catch glimpses of Uranus and Neptune with binoculars or a telescope.

H3+, known as "the molecule that made the universe," plays a crucial role in interstellar chemistry and the birth of stars.

Most people worldwide will be able to witness this event, also called a planetary parade, on February 28. The spectacle will occur when Mercury joins six other planets already in alignment. While ...

A rare full seven-planet alignment will be visible in the early night sky between Feb. 22 and 28. We have the tips you need ...

How does a compass work in space? From the moon to Venus, here’s how a compass would work beyond Earth’s magnetic field.

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

A rare full seven-planet alignment will be visible in the early night sky between Feb. 22 and 28. We have the tips you need ...

All of Earth's planetary neighbors are about to be visible in the night sky next week – though you may need binoculars to see ...

Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

So, if astrobiologists ever do find alien life with a weird chemistry that uses some liquid other than water, it's not likely ...

Social media users were floored by the incredible image captured in the viral post, with one saying: "I honestly gasped hard.