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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.

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.


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.

A human-dependent mosquito, the range of the disease-carrying Aedes aegypti is projected to grow in the U.S. and affect more people globally. Image via sanofi-pasteur/Flickr

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.

Summer solstice sunrise.

Summer solstice at Stonehenge

Why do people gather at Stonehenge in England on the solstice? Info and photos here.

Photo via EarthSky Facebook friend Kenneth G. Smith

How to see anticrepuscular rays

Next time you see crepuscular rays or sunrays extending from the horizon … turn around. You might catch a glimpse of elusive anticrepuscular rays.

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

Juno to enter Jupiter orbit July 4

Juno will fly closer to Jupiter than any spacecraft yet, into the harshest radiation environment in the solar system.


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.

Red Phoenix, aka Vermilion Bird. Image via fantasticanimals.wordpress.com.

A Chinese perspective on summer

In Chinese thought, summer has been associated with the color red, the sound of laughing, the heart organ, the fire element and a red phoenix bird.

Image Credit: hspauldi

Top tips for poison ivy, oak and sumac

Summer is a great time to frolic in the woods. Just don’t touch anything.

Screen Shot 2016-06-14 at 1.18.42 PM

Why your GPS twinkles

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

DSAC is prepping for a yearlong experiment to characterize and test its suitability for use in future deep space exploration.  Image via NASA Jet Propulsion Laboratory

Measuring time in deep space

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

ISS, as captured by Dave Walker

How to spot ISS in your sky

Check out the International Space Station in your night sky the next time it flies over. NASA’s Spot the Station program is easy, and it works!

Ash cloud over Volcan del Ruiz, 20 May 2016 via Servicio Geológico Colombiano

Colombian volcano activity sparks concern

Ash plumes and tremors in Colombia’s Nevado del Ruiz volcano are raising fears of destructive mudflows and the possibility of an eruption.


Humans domesticated dogs twice, says study

New research suggests that dogs were domesticated not once, but twice, in different parts of the world.

Image by Kevin Krajick of Lamont-Doherty Earth Observatory.

Did humans evolve with grasslands?

Scientists have uncovered a 24-million-year record of vegetation in the region of east Africa where early humans likely evolved.


Join the fun at ALCon 2016

ALCon 2016 is the national amateur astronomy convention, held this year from August 10-13 in Washington, D.C. Registration is now live!

Hurricane Alex as seen on January 14, 2016, by the the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. Image via NASA Earth Observatory.

How do hurricanes get their names?

The Atlantic hurricane season started June 1. Here are the hurricane names for the 2016 season.