Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Corona around the moon
These colorful rings of a lunar corona appear when we see the moon through a very thin cloud of similarly-sized water droplets.
January 28, 2016
Is El Niño at its peak?
This year's El Niño has likely reached its peak, say scientists, but given that Earth is hotter than in 135 years, there are no guarantees.
January 27, 2016
Dark matter linked to galaxy clusters’ internal structure
It's the first definitive detection of a property other than mass that's been linked to the invisible dark matter making up 27 percent of our universe.
January 27, 2016
Why Planet Nine might be for real
Claims about new planets that turned out to be wrong – and why 'Planet Nine' may be different.
January 26, 2016
And now … a real ISS transit of Saturn
A fake image ran in APOD a few days ago, but this video of an International Space Station transit across the face of Saturn looks real.
January 26, 2016
X-ray view of Earth’s aurora
An ESA space observatory was looking for something else when it caught these X-ray images of an aurora.
January 26, 2016
Star trails over Forbidden City, Beijing
Below, the Forbidden City in Beijing, China, former home of the Chinese emperor and a center of Chinese government. Above, the Forbidden City's sky counterpart.
January 26, 2016
Loneliest known exoplanet and its star
The exoplanet labeled 2MASS J2126 has the widest orbit of any planet ever found. Its "year" is nearly 1 million Earth-years long.
January 25, 2016
EarthSky News with Deborah Byrd
All the news you can fit into outer space LIVE on Slooh.com Mondays and Thursdays at 10:30 a.m. ET (1530 UTC). Or watch right here!
January 25, 2016
