May 6, 2025 by News Staff

Sub-Neptunes are high-occurrence exoplanets that have no solar system analog. Much smaller than gas giants and typically cooler than hot-Jupiter exoplanets,...

Aug 23, 2024 by News Staff

Water is an important component of exoplanets, with its distribution, that is, whether at the surface or deep inside, fundamentally influencing the planetary...

May 24, 2024 by News Staff

Created as part of the TESS-Keck Survey, the new catalog includes 126 strange planets beyond our Solar System, from rare worlds with extreme environments...

May 2, 2024 by News Staff

In 2023, astronomers reported a tentative detection of dimethyl sulfide — which is predominately produced by marine microbes on Earth and regarded...

Jan 25, 2024 by News Staff

Using the Wide Field Camera 3 (WFC3) instrument onboard the NASA/ESA Hubble Space Telescope, astronomers have detected water vapor in the transmission...

Nov 30, 2023 by Enrico de Lazaro

The bright nearby star HD 110067 hosts six transiting sub-Neptunes that follow a chain of resonant orbits, according to new research led by University...

May 25, 2023 by Natali Anderson

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based telescopes, astronomers have discovered and validated a...

May 11, 2023 by News Staff

Gliese 1214b is a so-called mini-Neptune, a smaller, denser version of Neptune that consists of a rocky core surrounded by a thick blanket of gas. This...

Jan 10, 2022 by Natali Anderson

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based facilities, astronomers have discovered a long-period sub-Neptune...

Nov 1, 2021 by Natali Anderson

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based telescopes, astronomers have discovered and confirmed a...

Jun 11, 2021 by News Staff

Professional astronomers and citizen scientists from the NASA-funded Planet Hunters TESS project have discovered a two-planet system around the bright...

Jun 10, 2021 by Sergio Prostak

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a temperate, Neptune-sized planet orbiting the M-dwarf star TOI-1231. An...

May 10, 2021 by Natali Anderson

Astronomers using NASA’s Transiting Exoplanet Survey Satellite have discovered a sub-Neptune exoplanet orbiting TOI-220, a bright and old K-type dwarf...

Mar 29, 2021 by Natali Anderson

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and the HARPS-N spectrograph at the 3.6-m Telescopio Nazionale Galileo, astronomers...

Mar 16, 2021 by News Staff

Data suggest that 80% of ‘hot’ rocky exoplanets — rocky planets with orbital period less than 100 days — formed as gas-rich sub-Neptunes...

Mar 11, 2021 by News Staff

Using the NASA/ESA Hubble Space Telescope, astronomers have found evidence of volcanic activity reforming the atmosphere of Gliese 1132b, a rocky exoplanet...

Mar 9, 2021 by Natali Anderson

Five sub-Neptunes and one super-Earth exoplanet orbit a moderately bright K-type star called K2-138. An artist’s impression of the six-planet system...

Feb 17, 2021 by Natali Anderson

K2-290A, the primary star in the triple stellar system K2-290, is tilted by 124 degrees compared with the orbits of both of its known planets, and has...

Feb 11, 2021 by News Staff

Using a newly developed system for mid-infrared exoplanet imaging, astronomers from the Breakthrough Watch Initiative say they can now use ground-based...

Dec 14, 2020 by Natali Anderson

Astronomers using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered two exoplanets transiting inactive red dwarf stars TOI-122...