Results 11 to 20 of about 1,751 (120)
Star-exoplanet interactions: A growing interdisciplinary field in heliophysics
Frontiers in Astronomy and Space Sciences, 2023 Traditionally, heliophysics is characterized as the study of the near-Earth space environment, where plasmas and neutral gases originating from the Earth, the Sun, and other solar system bodies interact in ways that are detectable only through in-situ or
K. Garcia-Sage +21 more
doaj +1 more source
The Astrophysical Journal, 2023 We assess the dependence of Earth’s disk-integrated mid-infrared thermal emission spectrum on observation geometries and investigate which and how spectral features are impacted by seasonality on Earth.
Jean-Noël Mettler +4 more
doaj +1 more source
Possibilities for an Aerial Biosphere in Temperate Sub Neptune-Sized Exoplanet Atmospheres
Universe, 2021 The search for signs of life through the detection of exoplanet atmosphere biosignature gases is gaining momentum. Yet, only a handful of rocky exoplanet atmospheres are suitable for observation with planned next-generation telescopes.
Sara Seager +5 more
doaj +1 more source
The Demographics of Terrestrial Planets in the Venus Zone
The Astronomical Journal, 2023 Understanding the physical characteristics of Venus, including its atmosphere, interior, and its evolutionary pathway with respect to Earth, remains a vital component for terrestrial planet evolution models and the emergence and/or decline of planetary ...
Colby Ostberg +9 more
doaj +1 more source
Citizen Scientists Help Detect and Classify Dynamically Triggered Seismic Activity in Alaska
Frontiers in Earth Science, 2020 In this citizen science project, we ask citizens to listen to relevant sections of seismograms that are converted to audible frequencies. Citizen scientists helped identify local seismic events whose recorded signals are much smaller than those ...
Vivian Tang +10 more
doaj +1 more source
Generative Modeling of InSAR Interferograms
Earth and Space Science, 2019 Interferometric synthetic aperture radar (InSAR) has become an essential technique to detect surface variations due to volcanoes, earthquakes, landslides, glaciers, and aquifers.
Guillaume Rongier +3 more
doaj +1 more source
Oxygen False Positives on Habitable Zone Planets Around Sun‐Like Stars
AGU Advances, 2021 Oxygen is a promising exoplanet biosignature due to the evolutionary advantage conferred by harnessing starlight for photosynthesis, and the apparent low likelihood of maintaining oxygen‐rich atmospheres without life.
Joshua Krissansen‐Totton +3 more
doaj +1 more source
Water vapor retrieval from OMI visible spectra [PDF]
Atmospheric Measurement Techniques, 2014 There are distinct spectral features of water vapor in the wavelength range covered by the Ozone Monitoring Instrument (OMI) visible channel. Although these features are much weaker than those at longer wavelengths, they can be exploited to retrieve ...
H. Wang +4 more
doaj +1 more source
Geophysical Research LettersMars' polar ice deposits are thought to preserve a record of climate throughout their evolution. In addition to the large north polar layered deposits (NPLD) at Mars' north pole, smaller ice deposits are preserved in craters nearby.
R. A. McGlasson +3 more
doaj +1 more source
Helium Atmospheres May Hide in Current Exoplanet Analysis Frameworks
The Astrophysical Journal LettersThe increasing number of detailed exoplanet observations offers an opportunity to refine our analyses and interpretations. Here, we show that atmospheres that appear volatile-rich and/or cloudy may instead be helium-rich.
Julien de Wit +2 more
doaj +1 more source