Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s ...
Astronomy on MSN
October 2025: What's in the sky this month? Mercury and Mars meet, Titan transits Saturn, and the Orionid meteor shower dazzles
October's longer nights bring two transits of Titan across Saturn, while Io and Europa tango together across Jupiter three ...
A recent study shows the asteroid belt is slowly losing material due to gravitational forces and collisions, with ...
The Habitable Worlds Observatory is poised to tell us whether Earthlike planets are common—if it can get off the ground ...
IEEE Spectrum on MSN
Have We Reached a Space-Junk Tipping Point?
Jah of the University of Texas at Austin argues for ultimately bringing orbital space closer to its original state of being, ...
China's Chang'e 6 mission returned the first-ever far-side lunar samples, revealing new insights into the moon's interior.
Billions of years ago, water flowed across Mars. Most scientists agree the red planet had rivers. But did those rivers flow ...
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