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Scientists Calculated How Long a Moon City Could Survive. The Results Aren’t Great.
A new study suggests a million-person lunar city could exhaust even an optimistic water supply within a century, despite extensive recycling.
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Mercury Is Slowly Collapsing in on Itself, and It’s Worse Than We Thought
New research suggests Mercury has shrunk more than previously estimated as its cooling core causes the planet’s surface to contract.
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Photo: NASA; alex-mit / Getty Images -
Astronomers Found a Cosmic Object 100 Billion Times Brighter Than a Normal Star
The object could help explain Webb’s mysterious little red dots and how supermassive black holes first formed.
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Photo: adventtr / Getty Images -
Earth’s Orbit Is Full of Hidden Space Junk, and Some of It Could Threaten Modern Life
Researchers found previously undetected debris near geosynchronous orbit, where critical communications and weather satellites operate.
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Scientists Say Some Ejected Comets Could Return to Our Solar System
Researchers say rare “quasi-interstellar objects” could be comets ejected by our solar system that eventually return after drifting through the galaxy.
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Good News! The Sun Might Not Eat Earth After All, According to New Simulations.
New simulations suggest Earth may avoid being engulfed by the Sun, though the planet would still become uninhabitable long before then.
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Venus and Jupiter Will Almost Touch in the Sky Tonight. Here’s How to See It.
The two brightest planets in the night sky will almost touch tonight, and no telescope is required to see it yourself.
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Everything We Know About Asteroid JH2, the Washington Monument-Sized Space Rock That Just Flew Between Earth and the Moon
Scientists say the asteroid was never going to hit us, which is nice, since they only spotted it days before it passed.
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A City-Killer Asteroid Just Passed Shockingly Close to Earth, and Scientists Barely Saw It Coming
The object was small, fast, and hard to spot, which is exactly why near-Earth asteroids remain so unnerving.
