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Editors of EarthSky

Hubble captures changes in Jupiter’s Great Red Spot

High-resolution maps and spinning globes reveal an elusive wave and changes to Jupiter’s Great Red Spot.

El Niño strengthening

"This baby is too big to fail,” said NASA climatologist Bill Patzert. “Over North America, this winter will definitely not be normal."

Coral bleaching event threatens reefs worldwide

For the third time on record, the world is experiencing a global coral bleaching event, say NOAA scientists.

Where to look for ET life? Habitability index aids in the search

Powerful telescopes coming soon. Where shall we point them to find extraterrestrial life? Astronomers have created a way to help prioritize exoplanets.

Best yet images of Pluto’s moon Charon

Beautiful and fascinating images from the New Horizons spacecraft reveal the large moon’s violent history.

Newly discovered dinosaur roamed northern Alaska

Hadrosaur was a truly polar dinosaur that endured months of winter darkness and probably experienced snow.

Photos from friends: Signs of autumn

Happy autumn (or spring, if you're in the Southern Hemisphere)! Enjoy the photos.

2015 Arctic sea ice minimum 4th lowest

The 2015 Arctic sea ice minimum summertime extent is the 4th lowest since observations from space began, according to a NASA analysis of satellite data.

Watch ISS crew’s return to Earth on Friday

Three International Space Station crew members will leave the spacecraft and return to Earth on Friday, September 11. Watch their departure and landing.

One of Saturn’s rings is different

A study suggests particles in a section of Saturn's rings are denser than elsewhere, which could mean that ring is much younger than the rest.