Fastest CO2 increase on record

The recent El Niño has driven a rise in atmospheric CO2. Scientists expect it to surpass 400 parts per million for the year and stay there at least a human lifetime.

Moon, Mars, Spica on June 15

We passed between Mars and the sun on May 22, and Mars still shines brightly. It's twice as bright as Spica tonight. Spica is blue-white, while Mars is red.

Why your GPS twinkles

Radio signals twinkle much as stars do. This can have an effect on your GPS.

Measuring time in deep space

A scientist developing the Deep Space Atomic clock on why it’s key for future space missions.

Patterns in Mars’ seasonal dust storms

Dust lofted by Martian winds links directly to temperatures in Mars' atmosphere. The temps are key to finding the patterns of the storms.

See Death Valley’s 2016 superbloom

A wonderful video from SkyGlowProject.com that'll let you experience the 2016 superbloom of wildflowers in Death Valley National Park.

Unsung

A log in northern Norway with a story to tell, if only it could ...

See it! Moon and Jupiter this weekend

Thanks to our friends in the EarthSky community, who posted or submitted these wonderful photos of the moon and Jupiter!

Moon and Jupiter again on June 11

Jupiter and the moon rule the evening sky tonight. Also, look for reddish Mars, which is nearly a match for Jupiter in brightness.

Peering beneath Jupiter’s clouds, via radio

Astronomers used the Very Large Array in New Mexico to create a new radio map of Jupiter, revealing what lies deep below Jupiter's cloudtops.