Para ilmuwan mengidentifikasi pabrik planet purba di luar Jupiter

Para peneliti telah melacak asal-usul beragam batuan luar angkasa awal ke jebakan debu tepat di luar orbit Jupiter. Temuan ini berasal dari simulasi komputer yang mencocokkan komposisi meteorit yang ditemukan di Bumi. Hal ini menunjukkan bahwa wilayah tersebut memproduksi berbagai generasi planetesimal selama jutaan tahun.

Sebuah studi dari Max Planck Institute for Solar System Research menunjukkan bahwa cincin tekanan gas yang lebih tinggi di luar Jupiter memerangkap debu dan kerikil. Hal ini memungkinkan planetesimal terbentuk dengan komposisi yang bervariasi antara dua hingga empat juta tahun setelah Tata Surya terbentuk 4,6 miliar tahun yang lalu.

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A meteorite found in the Sahara Desert has provided the first direct evidence of a massive protoplanet that orbited the young Sun more than 4.5 billion years ago. The object, comparable in size to the Moon, was destroyed in a collision, leaving fragments that reached Earth. Researchers say the discovery reveals a previously unknown path in early planet formation.

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Astronomers have found a planetary system around a red dwarf star where a rocky world orbits beyond two gas giants, challenging standard models of how planets form. The discovery around LHS 1903 suggests planets may arise sequentially rather than all at once.

NASA's Hubble Space Telescope has imaged the largest known protoplanetary disk, revealing a turbulent and asymmetric structure around a young star. The disk, nicknamed Dracula's Chivito, stretches nearly 400 billion miles across and lies about 1,000 light-years from Earth.

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A team of astronomers in Japan has discovered evidence of a faint atmosphere surrounding the small trans-Neptunian object 2002 XV93. Previously, only Pluto was known to retain an atmosphere among bodies beyond Neptune due to its stronger gravity. The finding, made via a rare stellar occultation on January 10, 2024 and published in Nature Astronomy, indicates a short-lived atmosphere requiring continuous replenishment.

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