Posts by 

EarthSky Voices

Biobots are a 3rd state between life and death

Biobots are tiny, multicellular robots powered by living cells to perform tasks, and they're a third state between life and death.

An uncommonly strong atmospheric river in Pacific Northwest

A powerful atmospheric river swept through the Gulf of Alaska in September 2024. The storm made landfall as Category 5, the highest tier on the scale.

Will you see colors in aurora? Or do you need a camera?

If you live below 50 degrees N. latitude, any aurora visible is likely to be low on your horizon, and you're less likely to see vivid colors.

Is cosmology at a tipping point? Is new physics ahead?

The standard model has done an exceptional job explaining cosmology. But there are problems. Will new observations be a tipping point toward new physics?

We’re getting better at seeing asteroids that may hit Earth

Astronomers are getting better at spotting asteroids, such as the asteroid that hit Earth near the Philippines on September 5, 2024. Read more.

Dark matter black holes could make Mars wobble

MIT researchers believe dark matter exists in the form of tiny black holes. Those black holes may cause Mars' orbit to wobble, making them detectable.

Black hole duo will merge in a distant galaxy

A black hole duo is headed for a collision. The active central black holes of 2 distant merging galaxies are only 300 light-years apart.

Question mark galaxy? Gravity lens creates cosmic graffiti

An unusual occurrence of gravitational lensing created this view of a question mark galaxy. The discovery reveals details about early galactic evolution.

Watch a star’s surface bubble in fantastic video and images

For the 1st time, astronomers have watched a star's surface bubble in magnificent detail. The bubbling is hot gases on a star 178 light-years away.

Sharks may be hunting other sharks

Researchers uncovered a rare instance of large sharks preying on one another. The finding shows the complexity of shark interactions and resulting impacts.

2026 Donation Campaign

If EarthSky has ever helped you discover something new, prepare for an eclipse, spot a planet, or simply inspired a moment of wonder, today is the perfect day to give back. Your donation helps keep trusted science news, expert night sky guides, and independent science journalism free for everyone.

Please help keep EarthSky going by donating today!

Please help keep

EarthSky going!

If you've already donated, we apologize for the popup and greatly appreciate your support.