The long-term retention of substantial atmospheres in close-in exoplanets presents a major challenge to classical hydrodynamic escape theory, which predicts rapid mass loss under intense stellar irradiation.
Ariel mission
Posted inAriel Mission, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Mass Of TOI-654 b: A Short-period Sub-Neptune Transiting A Mid-M Dwarf
Sub-Neptunes are small planets between the size of the Earth and Neptune. The orbital and bulk properties of transiting sub-Neptunes can provide clues for their formation and evolution of small […]
Posted inAriel Mission, Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Ice Giant, Icy Worlds, Neptune, Status Report, Uranus
The Possibility of Hydrogen-Water Demixing in Uranus, Neptune, K2-18b and TOI-270d
The internal structures of Uranus and Neptune remain unknown. In addition, sub-Neptunes are now thought to be the most common type of exoplanets.
Posted inAriel Mission, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Maximizing Ariel’s Survey Leverage For Population-Level Studies Of Exoplanets
ESA’s Ariel mission will be uniquely suited to performing population-level studies of exoplanets. Most of these studies consist of quantifying trends between an Ariel-measured quantity, y, and an a priori […]
Posted inAriel Mission, Astronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Ten Aligned Orbits: Planet Migration in the Era of JWST and Ariel
Understanding the diverse formation and migration pathways that shape exoplanetary systems requires characterizing both their atmospheric properties and their orbital dynamics.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Status Report
NeurIPS 2024 Ariel Data Challenge: Characterisation of Exoplanetary Atmospheres Using a Data-Centric Approach
The characterization of exoplanetary atmospheres through spectral analysis is a complex challenge. The NeurIPS 2024 Ariel Data Challenge, in collaboration with the European Space Agency’s (ESA) Ariel mission, provided an […]
Posted inAriel Mission, Astrochemistry, Astrogeology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Refractory Phosphorus In The HD 100546 Protoplanetary Disk
The phosphorus budget of planets is intertwined with their formation history and is thought to influence their habitability.
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
De-jittering Ariel: An Optimized Algorithm
The European Space Agency’s Ariel mission, scheduled for launch in 2029, aims to conduct the first large-scale survey of atmospheric spectra of transiting exoplanets.
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
NASA ROSES-24 Amendment 60: New Opportunity: D.21 U.S. Contributions to Ariel Preparatory Science
Ariel is the fourth European Space Agency (ESA) Cosmic Vision medium class science mission which will use near- and mid-infrared spectroscopy to characterize the atmospheres of approximately 1000 exoplanets, thereby […]
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Citizen Science / Open Science, Exoplanets, -moons, -comets, Press Release
Competition To Unlock The Atmospheres Of Distant Planets Using AI
The competition, based on the European Space Agency’s Ariel space mission and featured at the NeurIPS 2024 machine learning conference, will tackle one of astronomy’s most complex and important data […]