How Astronomers Define Where a Galaxy Ends and Interstellar Space Begins
Updated: 2024-10-15 18:00:00
Explore how star formation, gas density, and proximity to other galaxies define where a galaxy ends.
How Different Stars Affect the Habitability of Their Planets
Updated: 2024-10-09 13:00:00Earth resides within the sun's habitable zone, ensuring our planet sustains life. NASA scientist Noah Tuchow explains how stars influence planetary habitability.NASA's Crewed Mars Mission in the 2030s Could Unlock Some Geologic Mysteries
Updated: 2024-10-08 16:00:00Mars’ craters come from ancient collisions during the formation of the solar system.