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Posts by
EarthSky Voices
Webb glimpses doomed star before its explosion
For decades, astronomers have wanted to know exactly what the explosion of a doomed star looks like. The Webb Space Telescope has made that knowledge possible.
October 9, 2025
Alpheratz belongs to Andromeda, but is part of the Great Square
Alpheratz appears to our eyes as a single star but it is actually a close binary star system. Many stargazers use it to locate the Andromeda galaxy.
October 9, 2025
Mars missions image Comet 3I/ATLAS during red planet flyby
Spacecraft around Mars have caught images of interstellar comet 3I/ATLAS as it made a close pass past the red planet. See the images here.
October 7, 2025
Moon-forming disk found around massive planet
Data from the Webb space telescope reveal that a massive planet around a distant star is encircled by a moon-forming disk.
October 3, 2025
Space
Rogue planet found growing at astonishing record rate
Astronomers have discovered a rogue planet eating up 6 billion tons of gas and dust every second. That's the fastest rate ever recorded for any planet.
October 2, 2025
Why don’t evergreen trees change color and drop their leaves?
As temperatures drop, broad-leafed deciduous trees withdraw green chlorophyll from their leaves and turn colors. Evergreens solve the problem a different way.
October 1, 2025
After the International Space Station, what comes next?
Operations on the International Space Station will come to an end in 2030. What's next? Plans are for privately owned, commercially operated space stations.
September 26, 2025
Space
Trouble for Hayabusa2? Asteroid target smaller than expected
New observations of the asteroid that Hayabusa2 is scheduled to touch down on in 2031 have revealed it's smaller and spinning much faster than once thought.
September 25, 2025
The tally is in! 6,000 exoplanets now confirmed
NASA announced this week that it has confirmed a tally of 6,000 exoplanets, or worlds orbiting distant stars. The first exoplanets were discovered 30 years ago.
September 18, 2025
Massive eruption 74,000 years ago affected the entire globe
A massive eruption 74,000 years ago ejected volcanic material that affected the entire globe. But evidence shows people survived and adapted after the eruption.
September 18, 2025
