The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get ...

Earth has a newly discovered—albeit temporary—companion in its journey around the sun. In research published this month in ...

Astronomers have found yet another quasi-moon companion of Earth in its orbit around the Sun believed to be a chunk of our ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be visible across the U.S.

Would you guess that the Earth is spinning at 1,000 mph around its axis and at the same time hurtling through space on its ...

The final 'planet parade' of the year will feature six planets aligning in the pre-dawn sky on Sunday, August 10. A planetary alignment, casually called a 'planet parade,' occurs when several planets ...

Skywatchers who spotted the Jupiter-Venus conjunction on Aug. 12 are in for a dazzling display in the night sky through the end of August, with a "planet parade" building in the eastern sky, with ...

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...