A recent study by geophysicists at Washington State University offers insight into how nutrients may reach the subsurface ocean of Europa, one of Jupiter’s moons and a leading candidate for […]
Radiation
Hidden Magma Oceans Could Shield Rocky Exoplanets From Harmful Radiation
Deep beneath the surface of distant exoplanets known as super-earths, oceans of molten rock may be doing something extraordinary: powering magnetic fields strong enough to shield entire planets from dangerous […]
Artemis II AVATAR (A Virtual Astronaut Tissue Analog Response)
The AVATAR (A Virtual Astronaut Tissue Analog Response) investigation will use organ-on-a-chip devices, or organ chips, to study a effects of increased radiation and microgravity on human health.
HST Observations of HD 166620 and Tau Ceti: First UV Spectra of a Magnetic Grand Minimum Star and the Extent of Tau Ceti’s Astrosphere
We present new Hubble Space Telescope (HST) UV spectra of the K2 V star HD 166620, the first star clearly recognized to be in a “magnetic grand minimum” state analogous […]
Investigating the High-energy Radiation Environment of Planets in Sun-like Binary Systems
Far-ultraviolet (FUV) radiation is a driving source of photochemistry in planetary atmospheres. Proper interpretation of atmospheric observations requires a full understanding of the radiation environment that a planet is exposed […]
Naturally Occurring “Space Weather Station” Elucidates New Way To Study Habitability Of Planets Orbiting M Dwarf Stars
How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie’s Luke Bouma is exploring a new way to […]
Dearth of Photosynthetically Active Radiation Suggests No Complex Life on Late M-Star Exoplanets
The rise of oxygen in the Earth’s atmosphere during the Great Oxidation Event (GOE) occurred about 2.3 billion years ago. There is considerably greater uncertainty for the origin of oxygenic […]
Molecular Hydrogen Controls The Temperatures Of Flares On TRAPPIST-1
Early JWST observations of TRAPPIST-1 have revealed an unexpected puzzle: energetic white-light flares (E>1030 erg) reach temperatures of only ∼3500–4000,K, nearly three times cooler than typical solar flares, which peak […]
Recent Production Rates Of Cosmogenic Nuclides In The Igneous Rocks of Jezero Crater Floor, Mars
The Perseverance rover has collected rock samples from the floor of Jezero crater, Mars, set to be returned to Earth through the Mars Sample Return (MSR) mission. These surface rocks […]
Fungi From Chernobyl: Mycobiota Of The Inner Regions Of The Containment Structures Of The Damaged Nuclear Reactor
Extensive fungal growth has been detected on the walls and other building constructions in the inner parts of the Shelter of the damaged fourth Unit of the Chernobyl Nuclear Power […]
