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.
A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has two planets that orbit their star in a unique style, like an old-fashioned merry-go-round.
Astronomy
Jul 3, 2025
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The NASA/ESA Cassini-Huygens mission explored Saturn and its moons from 2004 to 2017, providing the most detailed images and data on the system ever taken. This included Saturn's largest moon, Titan, which the probe examined ...
Planetary Sciences
Jul 2, 2025
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24
Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a new super-Earth exoplanet that orbits a nearby M dwarf star. The newfound alien world, designated TOI-1846 b, ...
There's nothing to get a scientist's heart pumping like a good, old-fashioned statistical debate. When it comes to topics like finding Earth analogs or hints of a biosignature in an atmosphere, those statistical debates could ...
Planetary Sciences
Jun 30, 2025
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39
What can Earth-sized exoplanets teach scientists about the formation and evolution of exoplanets throughout the cosmos? This is what a study recently posted to the arXiv preprint server hopes to address as an international ...
Planetary Sciences
Jun 30, 2025
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54
According to the latest studies led by Heidelberg University astronomers, low-mass stars quite often host Earth-like planets. Data collected as part of the CARMENES project were the basis of this finding. By analyzing the ...
Astronomy
Jun 27, 2025
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143
The search for life beyond our planet continues, and one of the most underappreciated tools in an astrobiologist's toolkit is statistics. While it might not be as glamorous as directly imaging a planet's atmosphere or finding ...
Planetary Sciences
Jun 26, 2025
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108
When two stars orbit one another in such a way that one blocks the other's light each time it swings around, that's an eclipsing binary. A new paper from NASA's Eclipsing Binary Patrol citizen science project presents more ...
Astronomy
Jun 26, 2025
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32
Detecting exoplanets is one thing, but imaging them is another thing entirely. Astronomers can detect them by the way they block their star's light and by the way they make their stars wobble, and from that they can infer ...
Astronomy
Jun 26, 2025
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39
The James Webb Space Telescope has discovered its first exoplanet, astronomers said Wednesday, capturing rare direct images of the relatively small world in Earth's galactic backyard.
Planetary Sciences
Jun 25, 2025
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