Did you know there are 3 different kinds of twilight that take place before sunrise and after sunset? Hare are the official definitions for the 3 twilights: civil twilight, nautical twilight, and astronomical twilight.
Total vs Partial Solar Eclipse: The difference between total and partial solar eclipses. Is a partial solar eclipse worth seeing? Worth traveling for? (YES)
See the ONLY time it's safe to view a solar eclipse with your naked eyes, 4 things to look for when buying eclipse glasses, and how to make a pinhole viewer.
The Great American Solar Eclipse (2017 total solar eclipse) is August 21, 2017 in 12 states. Here's a map, best places to view it, how to safely watch it, when future solar eclipses will occur.
