You're looking at a screencap of the transit of Venus across the face of the sun. It started at 604PM/ET and you'll only get one chance of seeing this in your lifetime. AFTER THE JUMP watch the livestream from NASA.
The Venus transit is described as "one of the rarest events in the heavens." This is only the sixth such event in recorded history. "It won’t do so again until 2117, making this the last transit of Venus for nearly everyone alive today." adds the Washington Post.
AFTER THE JUMP watch the NASA livestream.