New research reveals that Earth’s so-called “Boring Billion” was a time of dramatic change beneath the surface.

Looking for a sky event this week? Check out our full Sky This Week column. November 2: Neptune nestles between Saturn and the Moon Let's catch up with Venus in the morning sky; Earth's sister planet ...

The best time to see a shooting star is on Nov. 16 and 17, when the Leonids peak during an almost completely dark waning crescent moon. The meteors from the Leonids can be very bright and colorful ...

The science never said humanity was doomed. Now, apparently, you’re not obliged to believe it is.

An ominous-looking nebula named NGC 246 lurks in the constellation Cetus about 1,600 light-years away from Earth. It is ...

Earth’s magnetosphere, once thought to have a simple electric polarity pattern, has revealed a surprising twist. New ...

Mercury currently appears as a bright "evening star" in the southwestern sky at sunset. Mercury will reach its greatest ...

NOAA's CCOR-1 coronagraph captured the blast that showed the sun's raw power in action.

Low clouds matter most for albedo and sunlight reflection. They bounce a lot of sunlight back to space. Last year, low cloud ...

Not everything about space is true. Our planetary scientist is here to share the truth about popular celestial myths.

Here's where, when, and how to watch Orionids meteor shower and the Comet Lemmon against the darkness of tonight's sky and ...

Phenology is the study of seasonal changes in plants and animals from year to year, such as when flowers bloom, birds nest or ...