By Fred Espenak in Astronomy Essentials | Human World|1 day ago
The August 21 total eclipse will last several hours. There will be many interesting things to look for. Bookmark this handy checklist of must-see events and effects, from eclipse gurus Fred Espenak and Mark Littmann.
Asteroid 2012 TC4 might give Earth a close shave, or pass more distantly, in October, 2017. Scientists are trying to reacquire the asteroid this summer – find it again in space – to determine its precise orbit.