Over the past three months, shares of Planet, which operates the world's largest privately owned constellation of Earth ...

Mercury takes only 88 Earth days to orbit the sun.

With each passing night as, the crescent slowly widens and it begins to appear against a progressively darker background, its ...

Because Mercury rotates so slowly — once every 58 Earth days — in some ... and should give us a closer look at the least-explored planet in the inner solar system. We still have so much ...

A NASA satellite that suddenly reappeared after going silent gets credit for the remarkable discovery—a pair of temporary ...

Certain extreme planets are called ultra-short period objects if they're very close to their stars and orbit them in mere hours, like K2-22b.

Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global ...

If extraterrestrial civilizations exist with technology similar to ours, could they detect Earth? A team of SETI researchers ...

YR4, recently discovered by NASA and ESA, has a 1.2% chance of impacting Earth on December 22, 2032. While the odds are low, ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Space agency officials have announced that a newly-discovered asteroid could collide with Earth in 2032. Experts are keeping a close eye on the space rock ... While asteroids orbit the Sun like ...