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Are Eris and Pluto different on the inside?
Dwarf planets Eris and Pluto are outwardly similar. But a new study suggests they are quite different on the inside, and that they evolved differenly.
November 21, 2023
Mars spacecraft fall silent as red planet goes behind sun
Mars passed behind the sun from Earth yesterday, November 18, 2023. Between now and early December, data exchange between Earth and Mars spacecraft is limited.
November 19, 2023
Edwin Hubble and the expanding universe
In 2018, the International Astronomical Union voted to rename Hubble's law as the Hubble–Lemaître law to share credit between Edwin Hubble and Georges Lemaître.
November 19, 2023
The universe is expanding faster than theory predicts
The universe is expanding faster than theory predicts. Scientists are trying to come up with new models to explain what the standard model of cosmology can't.
November 16, 2023
Are 2 huge blobs inside Earth due to an ancient impact?
A new study from an international team of researchers says that 2 huge blobs inside Earth came from the collision with the planet Theia billions of years ago.
November 13, 2023
Jupiter’s moon Ganymede is coated in salts and organics
NASA's Juno spacecraft has found salts and organics on Jupiter's largest moon, Ganymede. They suggest that watery brines came up to the surface from deep below.
November 12, 2023
Seasons of Uranus, a sideways world
The seasons of Uranus, each over two decades long, result from its tilted rotation axis, making for strange summers and winters on that planet.
November 12, 2023
Rover spies rock features on Mars with odd circular shapes
NASA's Perseverance rover recently found odd circular rock features on Mars, similar to ones made by microbes on Earth in lakes. Evidence of life or geology?
November 9, 2023
1st science images from Euclid! Dr. Becky explains why we love them
See the first images from Euclid, a dazzling assortment of galaxies, clusters and nebulae that will help us understand dark matter and dark energy.
November 8, 2023
Halley’s Comet is Edmond Halley’s namesake. Happy birthday, Edmond!
Astronomer Edmond Halley is famous for predicting the return of the comet that we now know as Halley's Comet. Edmond was born on November 8, 1656.
November 8, 2023
