Recent research raises the possibility that 3 and 7 million years ago, the Sun encountered massive clouds that shrank the heliosphere–the solar cocoon protecting our solar system–exposing Earth to its […]
interstellar cloud
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Press Release
PHANGS-JWST: The Largest Extragalactic Molecular Cloud Catalog Traced By Polycyclic Aromatic Hydrocarbon Emission
High-resolution JWST images of nearby spiral galaxies reveal polycyclic aromatic hydrocarbon (PAH) emission structures that trace molecular gas, including CO-dark regions.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Imaging & Spectroscopy, Interstellar, Status Report
The Role Of Polycyclic Aromatic Hydrocarbons In Astrochemical Modeling At Different Evolutionary Stages Of Cold Dense Cloud Cores
Context. Although the role of PAHs have been highlighted in recent years, it is crucial to verify their functions at different evolutionary stages of dark cloud cores.
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Status Report
Ly-α Processing of Solid-state Ethanolamine: Potential Precursors to Sugar and Peptide Derivatives
Ethanolamine (EA), a key component of phospholipids, has recently been detected in the interstellar medium within molecular clouds.
Posted inAstrochemistry, Astronomy & Telescopes, Biogeochemical Cycles & Geobiology, Biophysics, Fossils & Paleontology, Impact events, Interstellar, Press Release, Radiation, Water/Hycean Worlds & Oceanography
Evidence Of An Ancient Cosmic Event Deep In Earth’s Oceans
Beryllium-10, a rare radioactive isotope produced by cosmic rays in the atmosphere, provides valuable insights into the Earth’s geological history.
Posted inAstrochemistry, Atmospheres, Climate, Weather, Interstellar, Space Weather & Heliophysics, Status Report
Earth’s Mesosphere During Possible Encounters With Massive Interstellar Clouds 2 and 7 Million Years Ago
Our solar system’s path has recently been shown to potentially intersect dense interstellar clouds 2 and 7 million years ago: the Local Lynx of Cold Cloud and the edge of […]