The BepiColombo mission to our sun's innermost planet - fascinating little Mercury - launches from Europe’s spaceport in French Guiana on October 20 at 01:45 UTC (translate UTC to your time; it's tonight at 9:45 p.m. EDT). How to watch.
A bright moon interferes for much of the night for 2018's Orionid meteor shower. Watch shortly before dawn, after moonset. Try watching on the mornings of October 20, 21 and 22. A dark sky is always best. Have fun! How and when to watch.
Charles Darwin puzzled over why ants come in such wildly different sizes. The question even made him doubt his theory of evolution. New research might explain things. Read more.
Orionid meteors radiate from a point in the constellation Orion the Hunter. Just know that you don't have to identify this radiant point to see the meteors.
