Biosphere 2 isn’t just the site of a famous human experiment. Today, scientists there work to understand how life emerges in barren environments.

As of Tuesday, Sept. 23, the moon phase is Waxing Crescent, and according to NASA's Daily Moon Observation, there's just 3% ...

A new moon is when the moon shares the same celestial longitude as the sun; the two bodies are said to be in conjunction.

Across cultures, centuries, and belief systems, stories of death experiences have stirred fascination, fear, and faith in ...

For anyone in Hawaiʻi this weekend, the sky offers a rare show. Saturn, the ringed giant, will rise bright in the evening and ...

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.

Is it a full moon tonight? Wondering what is the planet and bright star shining next to the moon? Here's what to know and how ...

Saturn is about to make its closest approach to Earth, and that means you might be able to see its rings — if you have a ...

The Earth's protective ozone layer is on track to fully recover by mid-century, according to a report from the UN's World ...

These celestial wonders can tell us a lot about the state of the atmosphere at home on Earth as well as on other planets.

Fomalhaut’s eccentric ring has been the focus of intense scrutiny for nearly two decades, and it keeps giving astronomers new ...