Antarctic ozone shows signs of healing

Scientists at MIT and elsewhere say that the Antarctic ozone hole shows signs of shrinking. They say they expect it to close permanently by mid-century.

Asteroid Day 2016 is June 30

Hundreds of events - films, concerts, panels with engineers, scientists and astronauts - about asteroids and how to protect our planet from asteroid impacts.

Known asteroids near Earth today

The first map shows all the known asteroids within one-third of Earth's distance from the sun today - Asteroid Day - June 30, 2016. Look below for a second map.

Join astronomers in tracking asteroids

Sign up to trigger asteroid observations on a global telescope network on Asteroid Day, June 30. Anyone can help! Sign up by 00:00 UTC on July 1.

Want to go stargazing?

Where to go stargazing in Georgia, plus a word about a new feature - Best Places to Stargaze, for people around the world - just launched at EarthSky.

Cygnus spacecraft’s fiery re-entry

Scientists aboard an aircraft caught the impressive streak and final breakup of the Orbital ATK Cygnus supply ship, as it re-entered Earth's atmosphere on June 22.

Can we grow food on Mars?

Apparently we can, and you can view details in this video from a talk given at Mars One's recent private event in Amsterdam.

Warming temps to raise Zika virus risk

Global warming will cause more people to be exposed to the mosquito that carries Zika virus, says a new study. Why this mosquito is such a good virus-spreader.

See it! Solstice full moon photos

On June 20, 2016, the moon turns full at 11:02 UTC. The solstice arrives some 11.5 hours later, at 22:34 UTC. Solstice moon photos here from the EarthSky community.

Why your GPS twinkles

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