NASA's Solar Dynamics Observatory has been continuously observing the sun since its launch in 2010. From its vantage point above Earth, it sees the moon pass in front of the sun 2 to 5 times a year.

These next several days - January 14, 15 and 16, 2021 - you can spot the waxing crescent moon and innermost planet Mercury, near the sunset point.

We're at home. How about you? But we just discovered these virtual tours, galleries and live webcams from around the world, which we wanted to share. Stay home, and have some virtual fun ...

Megalodons - the extinct giant sharks that lived in most of Earth's oceans about 3 million years ago - gave birth to babies that were larger than adult humans, scientists say.

The planetary trio has come and gone, but some in EarthSky's community captured photos!

Astronomers have a new measurement for the distance of quasar J0313-1806, making it the new record-holder for the most distant quasar known. We're seeing it just 670 million years after the Big Bang, or more than 13 billion light-years away.

Space'sX CRS-21 Cargo Dragon returned to Earth from the ISS today, January 13, 2021, splashing down off the coast of Florida for the first time ever. The ship also succeeded in the first-ever autonomous undocking.

Happy Julian New Year! January 13, 2021, marks the last day of the year in the old-style Julian calendar. Why, and what happened when the calendars switched.

New work agrees with older research suggesting the oldest light in the universe - from the most distant galaxy yet known - started its journey toward us 13.77 billion years ago.

Last year, the U.S. experienced a record-smashing 22 weather and climate disasters that killed at least 262 people and injured scores more. Damages exceeded $1 billion each and totaled approximately $95 billion for all 22 events.