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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13
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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11
Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow a direct probe of gravity at low acceleration weaker than about 1 nanometer per second squared. ...
Astronomy
May 27, 2025
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67
Using the radial velocity method, an international team of astronomers has discovered a new extrasolar planet orbiting a nearby star known as GI 410. The newfound alien world was classified as a sub-Neptune exoplanet with ...
With an assist from the NEID spectrograph, a team of astronomers have confirmed the existence of exoplanet Gaia-4b—one of the most massive planets known to orbit a low-mass star. Gaia-4b is also the first planet detected ...
Astronomy
Feb 4, 2025
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129
Exoplanets have captured the imagination of the public and scientists alike and as the search continues for more, researchers have turned their attention to the evolution of metallicity in the Milky Way. With this answer ...
Planetary Sciences
Jan 28, 2025
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1
How common are Earth-like exoplanets—also called exo-Earths—and which exoplanetary systems should we target to find them?
Planetary Sciences
Aug 20, 2024
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9
On Aug. 24, 2023, more than three decades after the first confirmation of planets beyond our own solar system, scientists announced the discovery of six new exoplanets, stretching that number to 5,502. From zero exoplanet ...
Astronomy
Jul 17, 2024
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10
An international team led by UNIGE, UNIBE and PlanetS has shown the existence of two distinct populations of sub-Neptunes, resolving a debate in the scientific community.
Astronomy
Jun 27, 2024
0
81
A planet thought to orbit the star 40 Eridani A—host to Mr. Spock's fictional home planet, Vulcan, in the "Star Trek" universe—is really a kind of astronomical illusion caused by the pulses and jitters of the star itself, ...
Astronomy
May 28, 2024
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