![Chemical abundance distributions of the Sample II planet-candidate host stars in the [Fe/H]–[Mg/Fe] plane.](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/A-chemo.png?resize=1200%2C715&ssl=1)
[astro-ph.SR] To date, all known exoplanetary systems have been identified around stars currently residing in the Milky Way, whereas planets formed in external galaxies remain largely unexplored. Such systems would […]
extragalactic exoplanet
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Searching For Extragalactic Exoplanets: A Survey Of The Sagittarius Dwarf Galaxy Stream With TESS
To date no exoplanets have been detected outside the Milky Way, and their extragalactic occurrence rates are poorly constrained. Using available data from TESS we perform the first transit survey […]