Astronomical twilight is the darkest phase of twilight that a viewer sees before the last refracted sunlight leaves the horizon. It usually occurs twice a day.
Source
Technology. Innovation. Esports.
Technology. Innovation. Esports.
Trending Now
- How To Shop For EV Tires That Reduce Road Noise
- ‘Alien signal’ sent from Mars decoded by father-daughter team
- Ford F-150 Lightning Production Hits A Speed Bump
- China’s Shenzhou 19 astronauts take the reins of Tiangong space station (video)
- I’m A Gas Car Fan. Here’s Why I Love My First EV
- ‘Boo Deng’ steals the show at NASA JPL’s annual pumpkin carving contest (photos)
