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Space photo of the week: 1st-ever close-up of Neptune is Voyager 2's final portrait of a planetVoyager 2, NASA's longest-running mission, explored Neptune during a historic encounter on Aug. 25, 1989, sending back humanity's first close-ups of the planet.
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What is the coldest place in the solar system?What is the solar system's coldest spot and how does the coldest place on Earth compare?
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$100,000 quadrillion asteroid Psyche may be rusting, James Webb telescope revealsA new James Webb Space Telescope analysis of the giant, metal-rich asteroid Psyche reveals signs of hydration in the form of rust. This could help pin down the mysterious rock's origins.
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Over 350 asteroids have hidden moons, Gaia space telescope findsThe European Space Agency's Gaia space telescope has found evidence of more than 350 previously unknown moons orbiting asteroids within our solar system.
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9-mile-thick layer of solid diamonds may lurk beneath Mercury's surface, study hintsNew simulations suggest that a 9-mile-thick layer of solid diamonds may lurk deep below the surface of Mercury. The gems almost certainly can't be mined for bling — but they may help solve some of the planet's biggest mysteries.
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Astronomers want to change how we define a planet — againAstronomers are proposing a new, more quantitative definition of what makes a planet. The new definition looks more directly at the object's mass — but it would still leave Pluto out of the running.
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'Dark comets' may be a much bigger threat to Earth than we thought, new study warnsA strange class of space rock known as a "dark comet" has qualities of both asteroids and comets — and the hard-to-spot objects may pose a larger threat to Earth than we thought, according to new research.
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What would happen if a black hole wandered into our solar system?Black holes aren't "cosmic vacuum cleaners," but what would happen if one wandered into our solar system?
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'Space potato' spotted by NASA Mars satellite is actually something much coolerThe starchy-looking moon Phobos, destined to crash into Mars' surface, has been revealed in new detail by NASA's Mars Reconnaissance Orbiter. The 'space potato' image was recently shared on NASA's Instagram.
