As of Sunday, Dec. 14, the moon phase is Waning Crescent. This means 25% of the moon is lit up tonight, according to NASA's ...

A NASA-backed study suggests the biblical Star of Bethlehem may not have been a star at all, but a rare comet recorded in ancient Chinese texts. The theory is reigniting debate over what truly guided ...

Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From ...

The Star of Bethlehem, a guiding light for the Magi, has long puzzled experts. NASA scientist Mark Matney proposes a 5 BC ...

Earth is the only life-supporting planet in our Solar System. Until now. Today, we're bringing Kepler 22-b into our planetary ...

Mark Matney’s fresh hypothesis suggests that the Star of Bethlehem may have been a bright comet that briefly appeared to ...

A mysterious star described in ancient texts continues to puzzle experts, as new research offers a fresh explanation for the ...

Mark Matney’s fresh hypothesis suggests that the Star of Bethlehem may have been a bright comet that briefly appeared to ...

Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From ...

Using NASA's Kepler space telescope, Chinese astronomers have observed a binary star system known as KIC 5623923. As a result ...

Have scientists finally confirmed the existence of the first exomoon? This is what a study released on the preprint server ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...