Extrasolar Planets – PossibleThreat Articles

NASA just confirmed its 6,000th alien world. Some are truly bizarre

September 23, 2025 0 Comments Astronomy, Extrasolar Planets, Galaxies, mercury, NASA, Space Exploration, Space Missions, Space Telescopes

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas giants hugging their stars to planets covered in lava or clouds of gemstones, the diversity of discoveries is staggering. With upcoming missions like the Roman Space Telescope and the Habitable Worlds Observatory, scientists are getting closer to detecting Earth-like planets, and possibly signs of life.

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Alien water worlds were just a mirage

September 22, 2025 0 Comments Astronomy, Extrasolar Planets, NASA, Neptune, Solar System, Space Exploration, Space Telescopes, Stars

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, these worlds likely retain only a few percent of water at the surface.

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Scientists just found the hidden cosmic fingerprints of dark matter

September 22, 2025 0 Comments Astronomy, Astrophysics, Cosmology, Dark Matter, Extrasolar Planets, Galaxies, Space Exploration, Space Telescopes

Scientists at Rutgers and collaborators have traced the invisible dark matter scaffolding of the universe using over 100,000 Lyman-alpha emitting galaxies. By studying how these galaxies clustered across three eras shortly after the Big Bang, they mapped dark matter concentrations, uncovering cosmic “fingerprints” that reveal how galaxies grow and evolve.

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NASA’s Perseverance just found new evidence that Mars could have been habitable

September 22, 2025 0 Comments Asteroids, Comets and Meteors, Cosmic Rays, Extrasolar Planets, Mars, NASA, Solar System, Space Exploration, Space Missions

Jezero Crater’s rocks reveal three stages of water activity, shifting from hostile acidic fluids to more life-friendly alkaline ones. Perseverance’s discoveries guide future sampling and strengthen the hunt for past life on Mars.

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White dwarf caught devouring a frozen Pluto-like world

September 22, 2025 0 Comments Asteroids, Comets and Meteors, Extrasolar Planets, NASA, Neptune, Pluto, Space Exploration, Space Telescopes, Stars

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf star, offering the clearest evidence yet that icy, life-delivering objects exist beyond our Solar System. The find suggests fragments like comets and dwarf planets may be common ingredients of planetary systems.

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How to spot a wormhole (if they exist)

October 23, 2019 0 Comments Astronomy, Astrophysics, Big Bang, Black Holes, Cosmology, Extrasolar Planets, Galaxies, Stars

Whether wormholes exist is up for debate. But in a recent article, physicists describe a technique for detecting these pathways.

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Ancient stars shed light on Earth's similarities to other planets

October 17, 2019 0 Comments Asteroids, Comets and Meteors, Astronomy, Eris (Xena), Extrasolar Planets, Kuiper Belt, Pluto, Solar System, Stars

Earth-like planets may be common in the universe, a new study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not unique.

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Gas 'waterfalls' reveal infant planets around young star

October 16, 2019 0 Comments Astronomy, Extrasolar Planets, Galaxies, Jupiter, Kuiper Belt, Nebulae, Pluto, Stars

For the first time, astronomers have witnessed 3D motions of gas in a planet-forming disk. At three locations in the disk around a young star called HD 163296, gas is flowing like a waterfall into gaps that are most likely caused by planets in formation. These gas flows have long been predicted and would directly influence the chemical composition of planet atmospheres.

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Surveying solar storms by ancient Assyrian astronomers

October 16, 2019 0 Comments Ancient Civilizations, Anthropology, Extrasolar Planets, Fossils, Northern Lights, Origin of Life, Solar Flare, Sun

Researcher finds evidence of ancient solar magnetic storms based on cuneiform astrological records and carbon-14 dating. This work may help with our understanding of intense solar activity that can threaten modern electronics.

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Liquifying a rocky exoplanet

October 9, 2019 0 Comments Astronomy, Earth Science, Extrasolar Planets, Geology, Geomagnetic Storms, Kuiper Belt, Near-Earth Object Impacts, Pluto

A hot, molten Earth would be around 5% larger than its solid counterpart. The difference between molten and solid rocky planets is important for the search of Earth-like worlds beyond our Solar System and the understanding of Earth itself.

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