Exoplanet systems as a research area investigate the formation, architecture, dynamics, and physical properties of planetary systems orbiting stars other than the Sun, integrating observational, theoretical, and computational approaches. The field encompasses detection techniques (e.g., transits, radial velocities, direct imaging, microlensing), characterization of planetary masses, radii, atmospheres, and orbits, and statistical studies of population demographics as functions of stellar type, metallicity, and environment. It also addresses disk–planet interactions, migration processes, multi-planet dynamics, and stability, with implications for planet formation theories, comparative planetology, and the occurrence and potential habitability of terrestrial and giant planets in diverse stellar contexts.
Israeli astronomers report the detection of a new Jupiter-like exoplanet using the High Accuracy Radial velocity Planet Searcher (HARPS). The newfound alien world orbits a nearby M-dwarf star designated GJ 2126. The discovery ...
Astronomers have identified sulfur as a potentially crucial indicator in narrowing the search for life on other planets. While sulfur itself is not necessarily an indication of habitability, significant concentrations of ...
Astrobiology
Feb 19, 2025
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51
Astronomers have peered through the atmosphere of a planet beyond the solar system, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern Observatory's Very Large Telescope ...
Planetary Sciences
Feb 18, 2025
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89
Where is all the water that may form oceans on distant planets and moons? The SPHEREx astrophysics mission will search the galaxy and take stock.
Astronomy
Feb 13, 2025
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50
Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could provide a stellar environment hospitable to life-supporting exoplanets, according to astronomers at the ...
Astrobiology
Feb 13, 2025
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77
Canadian astronomers have taken an extraordinary step in understanding how planets are born, using the James Webb Space Telescope (JWST). JWST was used to study PDS 70, a young star with two growing planets in its orbit. ...
Astrobiology
Feb 12, 2025
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251
How would detecting methane help astronomers identify if exoplanets, or even exomoons, have life as we know it, or even as we don't know it? This is what a recent study published in The Astronomical Journal hopes to address ...
Astrobiology
Feb 10, 2025
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40
Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, the pair sets a new record for the fastest-moving exoplanet system, nearly double our solar system's ...
Planetary Sciences
Feb 10, 2025
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73
An international team has confirmed the discovery of a super-Earth orbiting in the habitable zone of a nearby sun-like star. The planet was originally detected two years ago by Oxford University scientist Dr. Michael Cretignier. ...
Astronomy
Feb 8, 2025
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1401
"Temperamental" stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant planets, suggests a new study led by UCL researchers.
Astronomy
Feb 7, 2025
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74
