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Here's when and where to experience this rare cosmic event -- and how to do it safely.
The closest look ever at a new comet will happen when the mountain-size comet Siding Spring buzzes past Mars this weekend.
An unusual total lunar eclipse happening early Wednesday morning US time will turn the moon a coppery red and lucky watchers may even see a simultaneous sunrise and moonset.
Just in time for the new moon, the Delta Aquarid showers peak on Monday and Tuesday and the Perseid showers start to get under way.
If you can't see this week's total lunar eclipse in the sky above you, you can still watch it online.
Slooh.com will broadcast the passing of Near-Earth Asteroid 2000 EM26 as the Olympics take place in Russia. Almost a year to the day, a different asteroid slammed into that country's town of Chelyabinsk.
The last solar eclipse of 2013 will take place in the early hours of November 3, and look closest to full over Atlanta and Pittsburgh.
It's a great night to be a luna-tic. Watch the perigee full moon here starting at 6 p.m. PDT and send Crave your best shots of the massive moon.
Most of Earth's inhabitants won't be able to directly watch the moon pass in front of the sun on Thursday -- leaving only a golden ring around its edges -- but anyone can catch the action online.
A huge rock the size of a mountain will come close to Earth just before the date of the rumored end of the world. Uh-oh.