Winter begins in Wisconsin

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Winter is coming to northerly latitudes ... A beautiful look at an early snowfall.

November 27, 2015

Satellite sensors for global fire coverage

A global fire alert from space, FireSat sensors would be able to detect a fire anywhere on Earth within 15 minutes of its start and notify area emergency responders.

Editors of EarthSky

November 27, 2015

Mars to lose a moon, gain a ring

Mars’ large moon Phobos is slowly falling toward the planet. In 20-40 million years, it'll shatter, and its pieces will form a Saturn-like ring around Mars.

Editors of EarthSky

November 26, 2015

Morning planets over Aegean Sea

The planets are still striking before dawn in late November, 2015.

Deborah Byrd

November 26, 2015

Is it true that Jupiter protects Earth?

Jupiter's gravity slings long-period comets out of harm's way, while nudging some asteroids closer to Earth. And, in 1770, Jupiter took aim on Earth - but missed.

Deborah Byrd

November 25, 2015

Circumhorizontal arc over Argentina

Don't call them "fire rainbows," experts say. They're not rainbows. And they originate with ice, not fire.

Deborah Byrd

November 25, 2015

Blue Origin soft-lands a rocket!

And Jeff Bezos, which founded the private spaceflight company, sends his first-ever tweet. Congratulations, Blue Origin!

Deborah Byrd

November 24, 2015

Slow motion time-lapse of crazy lightning

Cool video showing spectacular lightning discharges - running from cloud to cloud - seen from Mutare, Zimbabwe.

Peter Lowenstein

November 24, 2015

Paris climate summit: Why more women need seats at the table

Including more women in international climate negotiations will lead to better results. Here are 15 climate champions already making a difference

EarthSky Voices

November 24, 2015

Weather-related natural disasters are up

With COP21 poised to begin in Paris, a new UN report suggests that weather-related disasters were nearly twice as frequent over the past decade as two decades ago.

Deborah Byrd

November 23, 2015