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Posts by
EarthSky Voices
Rubin Observatory launches real-time alert system
The Rubin Observatory is sending out real-time alerts of its discoveries. These alerts include objects such as newly discovered supernovas, asteroids and more.
March 3, 2026
What is orbital resonance? A dance between heavenly bodies
What is orbital resonance? It's a precise dance between heavenly bodies when their orbits line up, causing them to have specific synchronicities.
February 27, 2026
Supermassive black hole stunts star growth in other galaxies
A new study shows that a supermassive black hole at the center of a galaxy can slow star growth even in other galaxies that are millions of light-years away.
February 26, 2026
Earth
Ice-free oases on Snowball Earth sheltered early life
Scientists have found evidence for ice-free oases on Snowball Earth, which might have provided a lifeline for early complex life.
February 20, 2026
Too many satellites? Is Earth’s orbit headed for catastrophe?
Are there too many satellites? The growing number of satellites poses an under-regulated threat of disaster for spaceflight. But it's not too late to act!
February 20, 2026
Star dims for 9 months, likely due to giant ringed object
A star dims its light to less than 97% of its brightness for 9 months before re-brightening. How? Scientists think a giant, ringed object blocked its light.
February 13, 2026
Inside-out planetary system upends notions of formation
Scientists have found an inside-out planetary system. They did not expect to find a rocky planet out beyond the gaseous planets. How did it get there?
February 12, 2026
Sirius B: Now is the best time to see Sirius’ companion
Now is a great time to see Sirius' dim companion, Sirius B. The 2 are currently at their maximum separation as viewed from Earth.
February 10, 2026
Is the whole universe just a simulation? Possibly!
Are we living in a simulation? Is Earth, and the whole universe, a simulation? It might be more likely than you think! Read more here.
February 8, 2026
Dark matter, not a black hole, could power Milky Way’s heart
A new study suggests a dark matter core, and not a supermassive black hole, lies at the center of our Milky Way galaxy. Read more here.
February 6, 2026
