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More evidence for ancient ocean on Mars from Chinese rover
A new analysis of data from China's Zhurong rover supports the existence of an ancient ocean on Mars billions of years ago in the northern hemisphere.
November 20, 2024
Red monsters were massive galaxies in the early universe
Red monsters were massive galaxies in the early universe. Astronomers aren't yet sure how these galaxies became so massive so soon after the Big Bang.
November 19, 2024
1st intentional signal to space sent by Arecibo 50 years ago
Iconic Arecibo telescope is no longer operational. But its legacy lives on. And in 1974, Arecibo sent earthlings' 1st intentional signal to space.
November 15, 2024
The strange seasons of Uranus, a sideways world
The seasons of Uranus, each over 2 decades long, result from its tilted rotation axis, making for strange summers and winters on that planet.
November 14, 2024
Estimating the odds for intelligent life in the multiverse
A team of astronomers recently looked at how different densities of dark energy in various possible universes would affect the chances for intelligent life.
November 13, 2024
Uranus mysteries solved with Voyager data
A new analysis of data shows that when the Voyager 2 spacecraft flew past Uranus in 1986, it saw a skewed view of the planet's magnetosphere. Here's why.
November 12, 2024
New! Measure black holes with light echoes
Astronomers say they've developed a new method to detect light that echoes around black holes. It could help them measure black holes' size and rotation.
November 12, 2024
Ancient outer solar system had a weak magnetic field
A new study of grain samples from asteroid Ryugu shows that an ancient magnetic field helped form asteroids and planets in the early outer solar system.
November 12, 2024
LIVE MONDAY: A Fermi Paradox solution with Alan Stern
Join us at 12:15 CST (18:15 UTC) on Monday, November 11, when former NASA chief Alan Stern will be discussing the Fermi Paradox. Where are all the aliens?
November 10, 2024
Do the giant rings of exoplanet J1407b rotate backward?
Scientists think the giant exoplanet J1407b has a massive ring system much larger than Saturn's. A new study suggests the rings may orbit the planet backward.
November 9, 2024
