Mercury takes only 88 Earth days to orbit the sun.

Planet Labs (NYSE: PL) stock is on a roll. Over the past three months, shares of Planet, which operates the world's largest privately owned constellation of Earth observation satellites, have roughly ...

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

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 ...

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 ...

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

In May 2024, an epic solar storm rattled Earth so powerfully that its effects were felt even at the bottom of the ocean.

ALIENS could discover humans on Earth by spotting one of 12 signs, scientists say. Topping the list is a clue that could be seen by extraterrestrials from a mammoth 12,000 lightyears away. The ...

The findings provide the strongest evidence yet that asteroids may have planted the seeds of life on Earth and that these ...