3+ hour, 56+ min ago   (153+ words) Ammonia-Bearing Compounds Discovered at Surface of Jupiter's Moon Europa'NASA Science (.gov) NASA Reveals New Details About Dark Matter's Influence on Universe NASA Finds Lunar Regolith Limits Meteorites as Source of Earth's Water What's Up: January 2026 Skywatching Tips from NASA NASA's…...

4+ mon, 4+ week ago   (315+ words) Due to the lapse in federal government funding, NASA is not updating this website. Let's go back to simple absorption and emission spectra. We can use a star's absorption spectrum to figure out what elements it is made of based…...