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Help astrobiologist find extreme rocks

A scientist launches a hunt for earthly extraterrestrials. Help her find them!

Venezuela is losing its last glacier

Venezuela’s last glacier is about to disappear, making it the first country in modern history to lose all of its glaciers.

Jupiter’s independently pulsating auroras

The auroras over Earth’s north and south poles typically mirror each other. But X-ray observations show that Jupiter’s auroras pulsate on different timescales.

Video: Our living planet from space

“That’s the Earth, breathing every single day, changing with the seasons, responding to the sun, to the changing winds, ocean currents and temperatures.”

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5 discoveries we owe to twins

Years of twin research have led to incredible insights into how our genes and the environment affect our health.

Almach is a quadruple star system

Almach looks like 1 star to the eye and like a colorful duo through a telescope. But today we know Almach as 4 stars.

Photos of this week’s spectacular dawn

Favorite photos from around the globe of Venus, Jupiter, Mars and the moon, which put on a show in the east at dawn this week. Thanks to all who submitted or posted at EarthSky Facebook.

Scientists warn: Soon it will be too late to save Earth

More than 15,000 scientists in 184 countries have signed a letter urging the world to address major environmental concerns. “Soon it will be too late to shift course away from our failing trajectory, and time is running out.”

Today in science: 1st intentional radio message to space

What do you think? Should we be advertising our presence in space?

November’s Leonid meteor shower

Here are all the details you need for 2017’s Leonid meteor shower, at its best on the mornings of November 17 and 18.

How tiger sharks are helping seagrass

A heatwave in 2011 killed off seagrass beds in Shark Bay, Australia. Now, scientists have discovered that tiger sharks are helping the ecosystem recover.

Citizen inventors: NASA’s 3D Printed Habitat Challenge

Future space missions won’t be able to carry all their building materials from Earth. Competitors are challenged to fabricate habitats using indigenous materials. $2 million prize!

Scientists find teeth of early human ancestor

A remarkable find of fossil teeth from tiny, furry-tailed creatures – thought by scientists to be a human ancestor – dating back 145 million years.