Enjoying EarthSky? Subscribe.

248,124 subscribers and counting ...

Star’s death spiral into black hole

What happens when a star with about our sun’s mass spirals into a black hole? With the distant event known as ASASSN-14li, astronomers have figured out some details.

What makes a pulsar pulse?

Hear the word “pulsar” and wonder what it is? Take 95 seconds to watch this video from NASA Astrophysics.

How a Venus flytrap knows to snap shut

Cool video, especially if you’ve never seen a Venus flytrap in action.

Fizzy lakes for Saturn’s moon Titan?

Bright features – informally known as “magic islands” – seem to appear and disappear in a Titan sea. A new study shows that bubbles could, potentially, be the cause.

Closest-yet star to black hole

Astronomers have found a star that whips around a black hole about twice an hour. That’s a very close orbit, possibly the tightest orbital dance ever witnessed for a star and black hole.

Moon shadow path in 2017 solar eclipse

Fly along with the moon’s shadow in this NASA video depicting the path of the August 21, 2017 total eclipse of the sun.

What moves Death Valley’s sliding stones?

People used to think that strong winds caused the rocks to move across Death Vally’s Racetrack Playa. Turns out, it’s not.

Beautiful video: Dolphin stampede

Truly one of the most wonderful videos we’ve seen. If you watch, you’ll see thousands of dolphins, plus a whale calf snuggling with its mom.

Astronomers respond to 7-planet find

Love this video of astronomers showing their excitement about the discovery of 7 Earth-sized planets orbiting a nearby star.

Curiosity rover spies Mars dust devils

As NASA explained, “On Mars, wind rules.”

Wow! Nearby TRAPPIST-1 has 7 planets

Big discovery! NASA’s Spitzer Space Telescope has revealed 7 Earth-sized planets orbiting a tiny star only 40 light-years away. Three of them are firmly in the habitable zone.

Sick of watching politics? Watch live panda cam

Listen to the birds chirping and watch the giant panda loll around and chew on bamboo. Peace!

Watch drone video of Falcon 9 landing

You’ve probably seen footage of rockets taking off, but here’s Falcon 9 returning to Earth and landing safely after its launch on Sunday.

Compare sizes of sun and stars

It’s hard to comprehend the sheer size of objects in space, but take 2 minutes and give it a try!

The Science Love Song

Bizarrely heart-warming, from the guys at ASAPScience.

Today in science: Spacecraft destroys sundog

Coolest space launch ever! Watch what happened when a spacecraft launch destroyed a sundog, in the process bringing to light a new form of ice halo.

Northern U.S. meteor dazzles thousands

Early Monday morning, thousands of people across multiple northern U.S. states watched a brilliant meteor streak across the sky. It then plunged into Lake Michigan.

Lost continent under Indian Ocean?

Evidence in rocks of a “lost continent,” thought to be leftover after the ancient supercontinent Gondwana began breaking up some 200 million years ago.

Frog tongue in super slo-mo action

Frog snags cricket with its ‘bungee cord’ tongue. Watch it in super slo-mo and find out why it works so well.

History of global temperature 1880-2016

Take 14 seconds to watch the change in Earth’s surface temperature from 1880 through 2016.