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The hunt for 'Planet Nine': Why there could still be something massive at the edge of the solar systemThe debate about an undiscovered Planet X or Planet Nine has been going on for more than 100 years.
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When did our solar system's planets form? Discovery of tiny meteorite may challenge the timelineAnalysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same time, challenging current models of our solar system’s evolution.
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New dwarf planet 'Ammonite' could upend the existence of Planet NineA newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be another nail in the coffin for the Planet Nine hypothesis.
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Scientists find Uranus is surprisingly warm, heating up the case for a new planetary missionScientists have found that Uranus emits its own internal heat, contradicting data from NASA's Voyager 2 probe nearly four decades ago.
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When will the solar system die out?After the sun goes out, what will happen to the solar system — and how long will it last?
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'Interstellar visitor' 3I/ATLAS could be the oldest comet ever seen — and could grow a spectacular tail later this yearNew simulations have narrowed down where the newly discovered interstellar comet 3I/ATLAS likely came from, revealing it could be more than 3 billion years older than the solar system.
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Astronomers are racing to study our solar system's newest 'interstellar visitor.' Here's why.Astronomers have been given the rare opportunity to study an extrasolar object after the recent discovery of the interstellar comet 3I/ATLAS. Experts tell Live Science how they are planning to observe the cosmic visitor.
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3I/ATLAS: Everything you need to know about the new 'interstellar visitor' shooting through the solar systemAstronomers have spotted a new interstellar object — the third of its kind ever seen — shooting towards us through the solar system. Here's everything you need to know about 3I/ATLAS.
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Watch newly discovered 'interstellar visitor' 3I/ATLAS shoot toward us in first livestreamYou can see the recently identified "interstellar object" 3I/ATLAS shooting towards us through the solar system in a livestream from the Virtual Telescope Project.
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