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Exoplanet

An artist’s rendition of a Neptune-like exoplanet. Photo Credit: NASA, ESA, CSA, R. Crawford (STScI

Today’s forecast: partially cloudy skies on an “ultra-hot Neptune”

Categories Space

This artist’s impression shows Barnard b, a sub-Earth-mass planet that was discovered orbiting Barnard’s star. Its signal was detected with the ESPRESSO instrument on ESO’s Very Large Telescope (VLT), and astronomers were able to confirm it with data from other instruments. An earlier promising detection in 2018 around the same star could not be confirmed by these data. On this newly discovered exoplanet, which has at least half the mass of Venus but is too hot to support liquid water, a year lasts just over three Earth days.

Astronomers Discover Sub-Earth Planet Orbiting Closest Single Star to Our Sun

Categories Space

Artist's illustration of the exoplanet WASP-107 b based on transit observations from NASA's James Webb Space Telescope as well as other space- and ground-based telescopes, led by Matthew Murphy of the University of Arizona and a team of researchers around the world.

Webb Telescope Unveils Surprising Atmospheric Asymmetry on Cool, Puffy Exoplanet

Categories Space

Temperate exoplanet LHS 1140 b may be a world completely covered in ice (left) similar to Jupiter’s moon Europa or be an ice world with a liquid substellar ocean and a cloudy atmosphere (centre). LHS 1140 b is 1.7 times the size of our planet Earth (right) and is the most promising habitable zone exoplanet yet in our search for liquid water beyond the Solar System. Image credit: B. Gougeon/Université de Montréal

Astronomers find surprising ice world in the habitable zone

Categories Space

gliese 12 b

Astronomers Discover Potentially Habitable Earth-like Exoplanet Just 40 Light-Years Away

Categories Space

Artist rendering of the view on a Hycean world.

Distant Planet’s Potential Life Signal Challenged, But Hope Remains

Categories Life & Non-humans, Space

This phase curve, captured by the MIRI low resolution spectrometer on NASA’s James Webb Space Telescope, shows the change in brightness of the WASP-43 system over time as the planet orbits its star. The system appears brightest when the hot dayside of the planet is facing the telescope, just before and after it passes behind the star. The system grows dimmer as the planet continues its orbits and the nightside rotates into view. It brightens again after passing in front of the star as the dayside rotates back into view. WASP-43 b is a hot Jupiter roughly 280 light-years away, in the constellation Sextans.

Webb Telescope Unveils Extreme Weather on Distant Exoplanet WASP-43 b

Categories Space

The atmosphere of the hot gas giant planet WASP-17 b, depicted in this artist’s concept, is composed primarily of hydrogen and helium, along with small amounts of water vapor and hints of carbon dioxide and other molecules. Credit: NASA, ESA, CSA, and R. Crawford (STScI)

Webb Detects Tiny Quartz Crystals in Clouds of Hot Gas Giant

Categories Space

Members of the public can help astronomers observe and study the night sky through NASA’s Universe of Learning Exoplanet Watch program. Credit: NASA/Bill Dunford

NASA Wants You to Help Study Planets Around Other Stars

Categories Space

The Kepler-1658 system.

Doomed planet too attracted to star

Categories Space

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