In our solar system, there are several thousand examples of co-orbital objects: bodies that share the same orbit around the sun or a planet. The Trojan asteroids are such an example. We have not yet observed any similar co-orbitals ...
Astronomy
May 26, 2022
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45
ESA's Gaia space telescope revolutionizes our understanding of the Milky Way. It scans the sky to measure the position, movement, distance, and characteristics of billions of stars.
Astronomy
May 13, 2022
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25
Our solar system contains eight planets and more than 200 moons. The large majority of those moons have no chance of being habitable, but some of them—Europa and Enceladus, for example—are strong candidates in the search ...
Astronomy
May 12, 2022
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141
Ninety percent of all exoplanets discovered to date (there are now more than 5,000 of them) orbit around stars the same size or smaller than our sun. Giant stars seem to lack planetary companions, and this fact has serious ...
Astronomy
May 9, 2022
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41
As the scientific community searches for worlds orbiting nearby stars that could potentially harbor life, new Southwest Research Institute-led research suggests that younger rocky exoplanets are more likely to support temperate, ...
Astronomy
May 3, 2022
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780
In the time since the first exoplanet was discovered in 1992, astronomers have detected more than 5,000 planets orbiting other stars. But when astronomers detect a new exoplanet, we don't learn a lot about it: We know that ...
Astronomy
May 2, 2022
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2611
Archival observations of 25 hot Jupiters by the NASA/ESA Hubble Space Telescope have been analyzed by an international team of astronomers, enabling them to answer five open questions important to our understanding of exoplanet ...
Astronomy
Apr 25, 2022
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385
Astronomers report the discovery of another exoplanet around a nearby star known as HD 83443. The newfound extrasolar world is a Jupiter-mass planet orbiting its host on a highly eccentric 22-year orbit. The finding was detailed ...
Mercury harbors water ice in the shadows of the steepest craters around its poles. But it is unclear how those water molecules ended up on Mercury. Now a new simulation shows that incoming minor bodies such as asteroids, ...
Planetary Sciences
Apr 19, 2022
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172
An international team of researchers who published a paper in the journal Science in 2016 describing their discovery of an exoplanet with three stars, has now retracted that paper.
