The Northern Lights are best viewed when it is dark outside, particularly between 10 PM and 2 AM local time, according to the NOAA. Visibility depends on factors like clear skies, minimal light ...

Firefly’s Blue Ghost Mission 1 set a new benchmark for commercial lunar exploration, lasting longer than any previous private mission and delivering 10 NASA instruments to the Moon. The mission ...

Severe weather threatens the mid-Mississippi Valley and Southeast this weekend, with possible hail, and isolated tornadoes. Newsweek's live blog is closed.