![Simulated results with NewAthena/X-IFU (400ks exposure, binning factor 3). Figure (a) and (b) plotted the dust model against simulated data (sim. data) along the line of sight from GX 340+00 and GX 5-1, respectively. Figure (c) displays the comparison of three silicate models in GX 13+. -- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Investigation.png?resize=1200%2C726&ssl=1)
[astro-ph.GA] Calcium is a highly depleted element in the interstellar medium (ISM), however its composition in the solid phase remains elusive. The detection of Ca-bearing dust has been limited due […]
Chandra
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report
Exploring Space Weather From Young Solar-like Stars as Windows to Exoplanetary Habitability
Young solar-like stars are efficient generators of magnetic activity, superflares, coronal mass ejections (CMEs), and stellar energetic particles. These phenomena drive the early evolution of stars and shape the habitability […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Press Release
Astrochemistry: Young Sun-like Star HD 61005 Blowing X-ray Astrosphere Bubble
For the first time, a much younger version of the Sun has been caught red-handed blowing bubbles in the galaxy, by astronomers using NASA’s Chandra X-ray Observatory.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release, Stellar Cartography
The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral energy distributions For 20 Exoplanet Host Stars That JWST Observed in Cycle 1
Correctly interpreting JWST spectra of close-in exoplanets requires a measurement of the X-ray and ultraviolet light that the planets receive from their host stars. Here we provide spectral energy distributions […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Chandra Finds That Young Exoplanet TOI 1227 b Is Shrinking
A baby planet is shrinking from the size of Jupiter with a thick atmosphere to a small, barren world, according to a new study from NASA’s Chandra X-ray Observatory.
Posted inCommercial & Private Sector, Policy, Reports, Roadmaps, & Plans, Status Report
Space Science And The Space Economy
Will it be possible in the future to realize large, complex space missions dedicated to basic science like HST, Chandra and JWST? Or will their cost be just too great?
Posted inExoplanets, -moons, -comets, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography
X-ray Activity Of Nearby G-, K-, And M-type Stars And Implications for Planet Habitability Around M stars
Context. The intense X-ray and UV emission of some active M stars has raised questions about the habitability of planets around M-type stars. Aims. We aim to determine the unbiased […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
The Mega-MUSCLES Treasury Survey: X-ray to Infrared Spectral Energy Distributions of a Representative Sample of M dwarfs
We present 5-1×10^7 Angstrom spectral energy distributions (SEDs) for twelve M dwarf stars covering spectral types M0-M8. Our SEDs are provided for community use as a sequel to the Measurements […]
Posted inAlpha Centauri, Biosignatures & Paleobiology, Brown Dwarfs, Epsilon Eridani, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri, tau Ceti, TRAPPIST-1
Goldilocks Stars Are Best Places to Look for Life
In the search for life beyond Earth, astronomers look for planets in a star’s “habitable zone” — sometimes nicknamed the “Goldilocks zone” — where temperatures are just right for liquid […]