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Scientists detect rotten egg smell from exoplanet where it rains molten glass

Scientists have discovered thousands of exoplanets in other solar systems and some of them are especially weird compared to our stellar neighborhood. For example, HD 189733 b, a planet 65 light years from Earth in the constellation Vulpecula, is larger than Jupiter, the largest planet in Earth’s solar system. But it also rains molten glass at extremely hot temperatures, with the scorching shards flying sideways due to winds that reach speeds of up to 5,000 mph (8,046 kph)....

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Magma world: A volcanic planet is “constantly exploding” with molten lava, astronomers announce

Like a giant exploding ember floating in space, a planet made of molten lava and covered in active volcanoes was recently described in The Astronomical Journal. Known as TOI-6713.01, the exoplanet was first spotted by UC Riverside astrophysicist Dr. Stephen R. Kane using NASA’s Transiting Exoplanet Survey Satellite, or TESS....

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Puzzling new planet is too big for its sun, challenging dominant theories of planet formation

It’s difficult to fathom how much bigger the Sun is than our little planet. Even though it’s just an average-sized star, you could squeeze 1.3 million Earths inside it. But planets in other solar systems don’t always have such a massive size difference, as detailed in an intriguing new report in the journal Science, which describes the discovery of a planet named LHS 3154b....

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Two giant planets collided and astronomers caught the explosion 1,800 light years away

It’s a bit mind-boggling to imagine something as big as the planet Neptune crashing into a similar-sized planet, but astronomers caught this exact scenario, as described in a recent study in the journal Nature. A pair of ice giants — or massive planets the size of Uranus and Neptune, but composed of elements that are heavier than hydrogen and helium — collided into each other as they passed in front of the star they orbit, ASASSN-21qj....

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Which planets – and planetary moons – could actually have life?

Science fiction is filled with stories of humans traveling to other planets — and, of course, quite often those planets are inhabited. Whether it’s explorers having romantic adventures in “Star Trek” or determined scientists trying to save humanity in “Interstellar,” people instinctively want to believe that our universe might allow us to casually planet-hop....

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