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45 best planets for life revealed in real-life ‘Project Hail Mary’

Where should we look for possible alien life? Researchers at Cornell University have identified the 45 best planets for life in a real-life 'Project Hail Mary.'

Paul Scott Anderson

April 2, 2026

Comet Hale-Bopp closest to the sun 29 years ago today

Comet Hale-Bopp was at its closest point to the sun 29 years ago today. It was widely seen from the Northern Hemisphere. When will we see it again?

Editors of EarthSky

April 1, 2026

Starlink satellite breaks up, scatters debris

A SpaceX Starlink satellite unexpectedly broke up in low-Earth orbit on March 29, 2026. Will the debris impact Artemis 2 or the International Space Station?

Kelly Kizer Whitt

March 31, 2026

Lightning on Jupiter is 100 times more powerful than Earth’s

Researchers using data from the Juno spacecraft have found that lightning on Jupiter can be 100 times more powerful than on Earth, and maybe even much more.

Paul Scott Anderson

March 31, 2026

Rubies on Mars? Rover finds fluorescent gems for 1st time

Are there rubies on Mars? NASA's Perseverance rover has found tiny fluorescent gems in pebbles that appear to be rubies or sapphires.

Paul Scott Anderson

March 29, 2026

A flurry of fireballs! Is there a reason for the uptick?

What's with the flurry of fireballs recently? Europe to Canada and the U.S. all have been reporting them. Is there a reason for the uptick? Results of an investigation here.

Kelly Kizer Whitt

March 27, 2026

5 moon myths that still fool people today

There are plenty of myths that surround the moon. Here are 5 of the most popular. How many of these myths have you been led to believe?

Larry Sessions

March 27, 2026

Strange star mystery solved after 50 years

For 50 years, astronomers have puzzled over a strange star in Cassiopeia bright in X-rays. But new data from XRISM revealed the culprit: a hidden companion.

EarthSky Voices

March 27, 2026