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Super Earth

All articles tagged with #super earth

Webb Maps Olivine-Rich Surface of Nearby Airless Super-Earth
space23 days ago

Webb Maps Olivine-Rich Surface of Nearby Airless Super-Earth

JWST’s mid-infrared spectroscopy reveals LHS 3844 b, a rocky super-Earth about 50 light-years away, has a dark, olivine-rich crust with no detectable CO2 or SO2 and likely no atmosphere. The planet is roughly 30% larger than Earth, orbits its red dwarf in 11 hours, and is tidally locked, resulting in a scorching dayside and a barren surface. This demonstrates JWST’s ability to infer surface texture and geology of distant worlds, opening new possibilities for direct exoplanet terrain characterization via infrared data.

via Jalopnik|
#exoplanets#james-webb-space-telescope#lhs-3844-b
Stellar radiation sculpts four young planets into super-Earths
space4 months ago

Stellar radiation sculpts four young planets into super-Earths

Astronomers weigh four young, bloated planets around the infant star V1298 Tau and find they are extremely low density and actively losing their atmospheres to photoevaporation. Using transit timing variations, the team shows the planets are on track to shed most of their atmospheres, evolving into rocky super‑Earths or mini-Neptunes, suggesting a common outcome for such compact planetary systems.

via Space|
#exoplanets#photoevaporation#space
Webb Telescope Reveals Surprising Atmosphere on Ancient Lava Planet
science4 months ago

Webb Telescope Reveals Surprising Atmosphere on Ancient Lava Planet

NASA's JWST has provided the strongest evidence yet that the ultra-hot super-Earth exoplanet TOI-561 b, despite its extreme conditions, possesses a thick, volatile-rich atmosphere, challenging previous assumptions about small, hot planets losing their atmospheres. The findings suggest this planet has retained its atmosphere, possibly due to a balance between atmospheric escape and magma ocean absorption, opening new questions about planetary evolution in harsh environments.

via SciTechDaily|
#atmosphere#exoplanet#james-webb-space-telescope
Nearby Star Hosts Newly Discovered Super-Earth Exoplanet
science11 months ago

Nearby Star Hosts Newly Discovered Super-Earth Exoplanet

Astronomers using NASA's TESS have discovered a super-Earth exoplanet, TOI-1846 b, orbiting a nearby M dwarf star about 154 light years away. The planet is roughly twice Earth's size, four times its mass, and likely water-rich, orbiting its star every 3.93 days. The discovery adds to TESS's catalog of over 7,600 candidate exoplanets and highlights the potential for further studies to determine its composition.

via Phys.org|
#astronomy#exoplanet#science
Scientists Discover a Potentially Habitable Super-Earth in a New Exoplanetary Frontier
science11 months ago

Scientists Discover a Potentially Habitable Super-Earth in a New Exoplanetary Frontier

Scientists have discovered a super-Earth named Kepler-725c in the habitable zone of its star using the transit timing variation method, which allows detection of planets that are otherwise difficult to observe directly. This planet, about 2,472 light years away, could potentially support life due to its location and size, marking a significant step in the search for Earth-like worlds beyond our solar system.

via Earth.com|
#exoplanets#habitable-zone#kepler-725c
Scientists Discover a Super-Earth in the Habitable Zone, Boosting Search for Extraterrestrial Life
science11 months ago

Scientists Discover a Super-Earth in the Habitable Zone, Boosting Search for Extraterrestrial Life

A super-Earth exoplanet named Kepler-735c, orbiting 2,472 light years away, was discovered indirectly through transit timing variations, revealing its highly elliptical orbit and partial habitability due to its changing position relative to its star. This discovery highlights the potential of TTVs to find planets on wider orbits and in habitable zones, expanding our understanding of exoplanets and the search for life.

via Space|
#exoplanet#habitable-zone#kepler-735c