Extrasolar Planets


Warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265)

Warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265)

We announce the discovery of two planetary companions orbiting around the low mass stars Ross 1020 (GJ 3779, M4.0V) and LP 819-052 (GJ 1265, M4.5V).


Enhanced Constraints on the Interior Composition and Structure of Terrestrial Exoplanets

Enhanced Constraints on the Interior Composition and Structure of Terrestrial Exoplanets

Exoplanet interior modelling usually makes the assumption that the elemental abundances of a planet are identical to those of its host star. Host stellar abundances are good proxies of planetary abundances, but only for refractory elements.


Evidence of A Moon Outside Our Solar System Within A Stellar Habitable Zone

Evidence of A Moon Outside Our Solar System Within A Stellar Habitable Zone

Using NASA's Hubble and Kepler space telescopes, astronomers have uncovered tantalizing evidence of what could be the first discovery of a moon orbiting a planet outside our solar system.


Atmospheric Characterization of Directly Imaged Exoplanets With JWST/MIRI

Atmospheric Characterization of Directly Imaged Exoplanets With JWST/MIRI

The Mid-Infrared instrument (MIRI) on board the James Webb Space Telescope will perform the first ever characterization of young giant exoplanets observed by direct imaging in the 5-28 microns spectral range.


Water Worlds Are Common

Water Worlds Are Common

Scientists have shown that water is likely to be a major component of those exoplanets (planets orbiting other stars) which are between two to four times the size of Earth.


Atmospheric Retrieval of Exoplanets

Atmospheric Retrieval of Exoplanets

Exoplanetary atmospheric retrieval refers to the inference of atmospheric properties of an exoplanet given an observed spectrum.


A Second Planet with an Earth-like Composition Orbiting The Nearby M dwarf LHS 1140

A Second Planet with an Earth-like Composition Orbiting The Nearby M dwarf LHS 1140

LHS 1140 is a nearby mid-M dwarf known to host a temperate rocky super-Earth (LHS 1140 b) on a 24.737-day orbit.


Traces of Exomoons in Computed Flux and Polarization Phase curves of Starlight Reflected by Exoplanets

Traces of Exomoons in Computed Flux and Polarization Phase curves of Starlight Reflected by Exoplanets

Moons are suspected to influence rocky exoplanet habitability, and gaseous exoplanets in stellar habitable zones could harbour abundant and diverse moons to target in the search for extraterrestrial habitats.


Atmospheric Circulation and Thermal Phase-Curve Offset of Tidally and Non-Tidally Locked Terrestrial Exoplanets

Atmospheric Circulation and Thermal Phase-Curve Offset of Tidally and Non-Tidally Locked Terrestrial Exoplanets

Using an idealised general circulation model, we investigate the atmospheric circulation of Earth-like terrestrial planets in a variety of orbital configurations.


Exoplanet Atmosphere Measurements From Direct Imaging

Exoplanet Atmosphere Measurements From Direct Imaging

In the last decade, about a dozen giant exoplanets have been directly imaged in the IR as companions to young stars.


Rocky Planet Ross 128 b Is Not Earth's Twin

Rocky Planet Ross 128 b Is Not Earth's Twin

Last autumn, the world was excited by the discovery of an exoplanet called Ross 128 b, which is just 11 light-years away from Earth.


New IR Instrument Searches for Habitable Planets

New IR Instrument Searches for Habitable Planets

A new instrument to search for potentially habitable/inhabited planets has started operation at the Subaru Telescope. This instrument, IRD (InfraRed Doppler), will look for habitable planets around red dwarf stars.


Distant Moons May Harbor Life

Distant Moons May Harbor Life

In a paper published Wednesday (June 13) in The Astrophysical Journal, researchers at the University of California, Riverside and the University of Southern Queensland have identified more than 100 giant planets that potentially host moons capable of supporting life.


Exoplanet Atmospheres at High Spectral Resolution

Exoplanet Atmospheres at High Spectral Resolution

The spectrum of an exoplanet reveals the physical, chemical, and biological processes that have shaped its history and govern its future. However, observations of exoplanet spectra are complicated by the overwhelming glare of their host stars.


On The Feasibility Of Intense Radial Velocity Surveys For Earth-twin Discoveries

On The Feasibility Of Intense Radial Velocity Surveys For Earth-twin Discoveries

This work assesses the potential capability of the next generation of high-precision Radial Velocity (RV) instruments for Earth-twin exoplanet detection.


Ground-based optical transmission spectroscopy of the small, rocky exoplanet GJ 1132b

Ground-based optical transmission spectroscopy of the small, rocky exoplanet GJ 1132b

Terrestrial Solar System planets either have high mean molecular weight atmospheres, as with Venus, Mars, and Earth, or no atmosphere at all, as with Mercury.


CARMENES Search for Exoplanets Around M dwarfs: A low-mass planet in the temperate zone of the nearby K2-18

CARMENES Search for Exoplanets Around M dwarfs: A low-mass planet in the temperate zone of the nearby K2-18

K2-18 is a nearby M2.5 dwarf, located at 34 pc and hosting a transiting planet which was first discovered by the K2 mission and later confirmed with Spitzer Space Telescope observations.


Earth As An Exoplanet

Earth As An Exoplanet

The search for habitable and inhabited environments beyond our planet commonly focuses on analogs to Earth, especially in the case of exoplanets. Observations from ground-based facilities, satellites, and spacecraft have yielded a rich collection of data that can be used to effectively view a distant Earth within the context of exoplanet characterization.


Investigating Planet Formation and Evolutionary Processes with Short-Period Exoplanets

Investigating Planet Formation and Evolutionary Processes with Short-Period Exoplanets

From wispy gas giants on the verge of disruption to tiny rocky bodies already falling apart, short-period exoplanets pose a severe puzzle to theories of planet formation and orbital evolution.


Formation of Terrestrial Planets

Formation of Terrestrial Planets

The past decade has seen major progress in our understanding of terrestrial planet formation. Yet key questions remain.



Top stories from October.