![Focal planes produced by ExoSim 2 for the Ariel VISPhot channel using two different PSFs. The focal plane array size is 64 × 64 pixels, oversampled by a factor of 3. Both panels are presented in decibels ([dB]) units to highlight the PSF side lobes. The left panel shows the effective PSF using an Airy function, which is cropped to the 8th zero. The right panel presents the effective PSF using a PAOS-simulated PSF as input, including aberrations and a defocusing of 200 nm root mean square (RMS) on the wavefront. -- astro-ph.IM](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/01/ExoSim-2-The-New-Exoplanet.png?resize=1200%2C721&ssl=1)
ExoSim 2 is the next generation of the Exoplanet Observation Simulator (ExoSim) tailored for spectro-photometric observations of transiting exoplanets from space, ground, and sub-orbital platforms.
Ariel Mission
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Icy Worlds, Press Release, Space Weather & Heliophysics, Stellar Cartography, Terraforming & Geoengineering, Venus, Water/Hycean Worlds & Oceanography
A Rare Venus Solar Transit Helps Unravel Exoplanet Atmospheres
In the next decade, researchers will start probing the atmosphere of planets as small as Earth and Venus orbiting nearby stars. But although these two Solar System planets are similar […]
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 […]
Posted inAriel Mission, Astronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Missions & Hardware, Press Release, Space Weather & Heliophysics
Proposed Space Missions To Explore Stellar Influence On Habitable Worlds
How the Sun influences the atmosphere, space weather and habitability of a planet, as well as the space between the stars, could be investigated by two proposed UK space missions, […]
![Abundance ratios as a function of [O/H] colour coded according to the stellar metallicity. The panels show the [X1/X2] ratios calculated correcting the abundances from the trends with the stellar effective temperature (see discussion in the text). The black dashed lines indicate the solar values. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/06/Ariel-stellar-characterisation.png?resize=1200%2C721&ssl=1)
Posted inAriel Mission, Astrochemistry, Exoplanets, -moons, -comets, Interstellar, Missions & Hardware, Status Report, Stellar Cartography
Ariel Stellar Characterisation II. Chemical Abundances of Carbon, Nitrogen, and Oxygen for 181 Planet-host FGK Dwarf Stars
One of the ultimate goals of the ESA Ariel space mission is to shed light on the formation pathways and evolution of planetary systems in the Solar neighbourhood. Such an […]
Posted inAI - Data - Apps - Cybernetics, Ariel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Data Availability And Requirements Relevant For The Ariel Space Mission And Other Exoplanet Atmosphere Applications
The goal of this white paper is to provide a snapshot of the data availability and data needs primarily for the Ariel space mission, but also for related atmospheric studies […]
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
ARES VI: Viability Of One-dimensional Retrieval Models For Transmission Spectroscopy Characterization Of Exo-atmospheres In The Era Of JWST And Ariel
Observed exoplanet transit spectra are usually retrieved using 1D models to determine atmospheric composition while planetary atmospheres are 3D.
Posted inAI - Data - Apps - Cybernetics, Ariel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Simulation-based Inference for Exoplanet Atmospheric Retrieval: Insights from winning the Ariel Data Challenge 2023 using Normalizing Flows
Advancements in space telescopes have opened new avenues for gathering vast amounts of data on exoplanet atmosphere spectra. However, accurately extracting chemical and physical properties from these spectra poses significant […]
Posted inAriel Mission, Astronomy & Telescopes, Exoplanets, -moons, -comets, Missions & Hardware, Press Release
Exoplanet Surveyor Ariel Passes Major Milestone
Ariel, ESA’s next-generation mission to observe the chemical makeup of distant exoplanets, has passed a major milestone after successfully completing its payload Preliminary Design Review (PDR).