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Could a giant void explain the universe’s expansion?
Scientists think we could live in a giant void, a less-dense bubble leftover from the Big Bang. If so, it could explain the expansion rate of the universe.
December 7, 2023
Einstein’s gravity and quantum mechanics united at last?
Modern physics is founded on 2 pillars: Einstein's gravity and quantum mechanics. But these 2 theories contradict each other. Does this theory reconcile them?
December 6, 2023
Astronomers spot 1st giant stream of stars between galaxies
Astronomers have found the 1st giant stream of stars outside a galaxy. It lies among the galaxies in the Coma cluster, and it may shed light on dark matter.
December 6, 2023
1st planet-forming disk found in another galaxy
For the first time, astronomers have discovered a planet-forming disk around a young star in another galaxy outside our own Milky Way galaxy.
December 5, 2023
What the Chinese Zhurong rover found beneath Mars’ surface
China's Zhurong rover has found polygonal wedges below the surface in Utopia Planitia on Mars. Freeze-thaw cycles of water and ice likely created the polygons.
December 3, 2023
EarthSky’s lunar calendar: How to use this great gift!
Follow the moon! Here’s why you need an EarthSky lunar calendar, the top tips for using it, and where you can order one.
December 1, 2023
Space Force to track ‘abnormal objects of unknown origin’
The U.S. Space Force wants to track objects near Earth that exhibit 'abnormal observables' and are of 'unknown origin.' Could there be a connection to UAP?
November 30, 2023
Nearby exoplanet is Earth twin, but hot as a pizza oven
Astronomers using the Hubble Space Telescope measured the exact diameter of a nearby Earth-sized exoplanet. The sizzling world is too hot for life, however.
November 29, 2023
Where is Voyager 2 going? And when will it get there?
Where is Voyager 2 going? It's not aimed for any particular star, but in 40,000 years it will pass within 1.65 light-years of the star Ross 248.
November 28, 2023
World’s largest optical telescope – the ELT – going up in Chile
The world's largest optical telescope will be the Extremely Large Telescope (ELT), currently under construction in the Chilean desert.
November 28, 2023
