NASA’s Stennis Space Center has quietly cleared a major hurdle for Artemis IV by finishing activation of a new high-pressure water system that will shield hardware from the force of full-scale rocket tests.

High-altitude flight is getting increasing attention from sectors ranging from telecommunications to emergency response. To make that airspace more accessible, NASA is developing an air traffic management system covering those altitudes and supplementing its work with real-time data from a research balloon in Earth's stratosphere.

Two next-generation satellite missions announced Thursday will help NASA better understand Earth and improve capabilities to foresee environmental events and mitigate disasters.

NASA vs SpaceX rockets compared on cost, technology, and performance, revealing how reusability and innovation reshape modern spaceflight missions.

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

STRIVE seeks to take measurements from the upper troposphere to the mesosphere while EDGE seeks to make glacier, and ice observations.