A climate tipping point is a critical threshold where a small environmental change can lead to dramatic and often ...

The comet should remain viewable through telescopes until September as it approaches the Sun, then emerge again in December on its outbound leg.

Astronaut Nichole Ayers recently witnessed a phenomenon known as a sprite from the International Space Station.

High above thunderclouds, where Earth’s atmosphere transitions into space, some strange and fleeting flashes of red light can ...

As of Friday, July 4, the moon phase is Waxing Gibbous. According to NASA's Daily Moon Observation, 66% of the moon will be ...

Maj. Nichole Ayers spoke with Denver7's Ryan Fish from the International Space Station, talking about her mission, her ...

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...