Enjoying EarthSky? Subscribe.

274,799 subscribers and counting ...

What will happen when our sun dies?

It won’t happen soon, not for another 5 billion years. Our sun’s fate, here.

What’s a safe distance between us and a supernova?

And how many potentially exploding stars are located within the unsafe distance?

Astronomers report success with machine deep learning

Deep learning is a form of artificial intelligence. In 2 unrelated studies, astronomers report “surprising” success using it to perform research that’s hard or impossible otherwise.

New science from Jupiter

When the Juno spacecraft recently flew over the poles of Jupiter, researchers were astonished. This 5-minute video from NASA explores the latest discoveries.

Hear the Milky Way Blues

Listen to the sound of our galaxy rotating. The variation of musical pitches portrays the motion of gas as it orbits around the center of our galaxy.

Insight Mars is on its way

The Insight Mars lander is due to set down on Mars’ surface in November, 2018.

Wall-E and Eva are going to Mars, too

Riding along with the InSight Mars mission, the 2 briefcase-sized CubeSats are designed to demonstrate nearly real-time communications between worlds.

Comet Halley’s 2 meteor showers

It’s because comets like Halley are so crumbly that we see annual meteor showers. One shower spawned by this comet is going on now. Another is visible in October.

Does Stephen Hawking’s final theory tame the multiverse?

“I have never been a fan of the multiverse. If the scale of different universes in the multiverse is large or infinite the theory can’t be tested.”

Gaia sees LMC stars as galactic fingerprint

It resembles a fingerprint, doesn’t it? But it’s really a galaxy, rotating. This image is from ESA’s Gaia space observatory. It shows the rotation of the Large Magellanic Cloud.