Scientists have long speculated about the potential habitability of Venus, not at the 700K surface, but in the cloud layers located at 48-60 km altitudes, where temperatures match those found […]
We present the mid-infrared (5-12 μm) phase curve of GJ 367b observed by the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST). GJ 367b is a hot (T_eq=1370 […]
Scientists have devised a new way to identify habitable planets and potentially inhabited planets, by comparing the amount of carbon dioxide in their atmosphere, to neighbouring planets.
Scientists at MIT, the University of Birmingham, and elsewhere say that astronomers’ best chance of finding liquid water, and even life on other planets, is to look for the absence, […]
Optical bandpass-filter observations can be simply processed to determine similar horizontal ammonia distributions above the Jovian cloud tops as mid-infrared and microwave observations.
For the first time, an instrument to find planets light years away was used on an object in the Solar System, in a study on Jupiter’s winds.
As the characterization of exoplanet atmospheres proceeds, providing insights into atmospheric chemistry and composition, a key question is how much deeper into the planet we might be able to see […]
![An illustration of the anticorrelation between the HCl abundance and water ice from a single observation (Panels A, B, and C) and from all “HCl in ice-holes'' cases (Panel D). Panel A. The aerosol extinction profiles at 3.09-3.46 μm (water ice band, yellow and red) and 0.76-1.6 μm (aerosol continuum, green and blue) measured by MIR and NIR, respectively. Panel B: Retrieved aerosol mass loading profiles of dust (red) and water ice (blue), bottom axes; temperature profile with uncertainties retrieved from NIR data (Fedorova et al., 2023), orange area and top axes. Panel C: volume mixing ratio of HCl (black lines and bottom axes) and H2O (blue lines and top axes) retrieved from MIR and NIR, respectively. Panel D: profiles of HCl VMR (black lines) and aerosol extinction at 3.1 μm (blue lines) normalized to [0, 1] and shifted to align all HCl maxima at 45 km; mean profiles are shown in bold. Error bars of the experimental data correspond to 1−σ uncertainty level. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2023/12/AnEvidenceOf.png?resize=1200%2C719&ssl=1)
In 2020, hydrogen chloride (HCl) in the gas phase was discovered in the atmosphere of Mars with the Atmospheric Chemistry Suite (ACS) onboard the Trace Gas Orbiter (TGO) mission (Korablev […]
Earth-mass planets are expected to have atmospheres and experience thermal tides raised by the host star.
This review presents an insight into our current knowledge of the atmospheres of the planets Venus, Mars, Jupiter, Saturn, Uranus and Neptune, the satellite Titan, and those of exoplanets.
