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At visible wavelengths, Venus appears serene and pale-yellow, but since the 1920s, observers have noted high-contrast features in the ultraviolet. These features track the about 4-day superrotation of the upper cloud deck and vary widely…

Earth and Planetary Astrophysics · Physics 2026-01-14 Jan Spacek , Yeon J. Lee , Paul B. Rimmer , Janusz J. Petkowski

The recently discovered super-Earth LP 890-9 c is an intriguing target for atmospheric studies as it transits a nearby, low-activity late-type M-dwarf star at the inner edge of the Habitable Zone. Its position at the runaway greenhouse…

Spider is a balloon-borne experiment that will measure the polarization of the Cosmic Microwave Background over a large fraction of a sky at 1 degree resolution. Six monochromatic refracting millimeter-wave telescopes with large arrays of…

Venus, our neighboring planet, is an open-air laboratory that can be used to study why Earth and Venus evolved in such different ways. Noble gases in planetary atmospheres are tracers of their geophysical evolution, and measuring the…

The atmosphere of a transiting planet shields the stellar radiation providing us with a powerful method to estimate its size and density. In particular, because of their high ionization energy, atoms with high atomic number (Z) absorb…

Earth and Planetary Astrophysics · Physics 2015-07-02 Fabio Reale , Angelo F. Gambino , Giuseppina Micela , Antonio Maggio , Thomas Widemann , Giuseppe Piccioni

Mini-EUSO is a UV telescope that will look downwards to the Earth's atmosphere onboard the International Space Station. With the design of the ultra-high energy cosmic ray fluorescence detectors belonging to the JEM-EUSO program, it will…

The Pulsed All-sky Near-infrared Optical Search for ExtraTerrestrial Intelligence (PANOSETI) is an instrument program that aims to search for fast transient signals (nano-second to seconds) of artificial or astrophysical origin. The…

The LSPE is a balloon-borne mission aimed at measuring the polarization of the Cosmic Microwave Background (CMB) at large angular scales, and in particular to constrain the curl component of CMB polarization (B-modes) produced by tensor…

\Archeops is a balloon--borne instrument dedicated to measuring cosmic microwave background (CMB) temperature anisotropies at high angular resolution ($\sim$ 12 arcmin.) over a large fraction (30%) of the sky in the (sub)millimetre domain…

Astrophysics · Physics 2016-08-16 J. -Ch. Hamilton , A. Benoît , the Archeops Collaboration

Stratospheric High Altitude Balloons (HABs) have great potential as a remote sensing platform for Earth Observations that complements orbiting satellites and low flying drones. At altitudes between 20-35 kms, HABs operate significantly…

Evidence of chemical disequilibria and other anomalous observations in the Venusian atmosphere motivate the search for life within the planet's temperate clouds. To find signs of a Venusian aerial biosphere, a dedicated astrobiological…

Instrumentation and Methods for Astrophysics · Physics 2022-11-10 Robert E. Weber , Janusz J. Petkowski , Monika U. Weber

The clouds have a great impact on Venus's energy budget and climate evolution, but its three-dimensional structure is still not well understood. Here we incorporate a simple Venus cloud physics scheme into a flexible GCM to investigate the…

Earth and Planetary Astrophysics · Physics 2024-07-24 Wencheng D. Shao , João M. Mendonça , Longkang Dai

PILOT (the Pathfinder for an International Large Optical Telescope) is a proposed 2.5 m optical/infrared telescope to be located at Dome C on the Antarctic plateau. The atmospheric conditions at Dome C deliver a high sensitivity, high…

We present the Near-Ultraviolet eXplorer (NUX), which will consist out of 4 small (36 cm diameter) ground-based telescopes that are optimized for the shortest wavelengths that are detectable from Earth (i.e., the near-UV [NUV] wavelength…

Instrumentation and Methods for Astrophysics · Physics 2024-09-23 Rudy Wijnands , Steven Bloemen , Rasjied Sloot , Rik ter Horst , Andre Young , Mattijs Bakker , Paul Groot , Paul Vreeswijk

Venus exhibits strong and changing contrasts at ultraviolet wavelengths apparently related to the clouds and the dynamics in the cloud layer, but to date their origin continues to be unknown. We investigate the nature of the UV contrasts…

Earth and Planetary Astrophysics · Physics 2025-02-10 Maarten Roos-Serote , Colin Wilson , Ryan MacDonald , Silvia Tellmann , Yeon Joo Lee , Igor Khatuntsev

Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take a form of warm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to carry out a direct and homogeneous…

With high-resolution spectroscopy we can study exoplanet atmospheres and learn about their chemical composition, temperature profiles, and presence of clouds and winds, mainly in hot, giant planets. State-of-the-art instrumentation is…

Earth and Planetary Astrophysics · Physics 2023-02-22 M. Lafarga , M. Brogi , S. Gandhi , H. M. Cegla , J. V. Seidel , L. Doyle , R. Allart , N. Buchschacher , M. Lendl , C. Lovis , D. Sosnowska

Small, expendable drop probes are an attractive method for making measurements in the lower atmosphere of Venus, \,augmenting the capabilities of orbiters or aerial platforms that must remain in the benign temperature region above 50 km…

Space Physics · Physics 2022-04-12 Jacob S. Izraelevitz , Jeffery L. Hall
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