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Man-made chemicals in deepest sea

Scientists have detected persistent man-made chemicals in crustaceans from the Mariana Trench and Kermadec Trench, deepest parts of the ocean ever sampled.

This artist's rendering shows NASA's Juno spacecraft making one of its close passes over Jupiter. Image via  NASA/JPL-Caltech

Success! Juno is orbiting Jupiter

After a 5-year voyage, Juno performed a successful braking maneuver on July 4. First spacecraft to enter Jupiter orbit since Galileo in the 1990s.

Image via Juan Ramon Rodriguez Sosa/Flickr.

How fireworks get their colors

The colors in fireworks help create “ohhhhs” and “ahhhhs.” But what creates the colors?

A ray of hope for Antarctica ozone depletion, via soslsd.org.

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.

Image via Debbie Lewis

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.

Asteroids in Earth's neighborhood of the solar system today, via Armagh Observatory.

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.

Image via Las Cumbres Observatory

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.

Here is Dan Lewelyn at Deerlick Astronomy Village near Atlanta, Georgia. Photo by Dave Woolsteen.

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.

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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.

Artist's concept of a greenhouse on the surface of Mars via SAIC/ NASA.

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.