asteroid

Astronomy asteroid funny science rings - 8123090432
Via: Astronomy
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Observations at many sites in South America, including the European Southern Observatory's (ESO) La Silla Observatory, have made the surprise discovery that two dense and narrow rings surround the remote asteroid Chariklo. This is the smallest object by far found to have rings and only the fifth body in the solar system — after the much larger planets Jupiter, Saturn, Uranus, and Neptune — to have this feature. The origin of these rings remains a mystery, but they may be the result of a collision that created a disk of debris.
asteroid crater double impact Mars - 6619305472
Via: Bad Astronomy
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From Bad Astronomy:

Most craters you see are pretty simple: something impacts the ground at high speed, BOOM!, and you get a crater like a dish tossed into soft sand. But this one has two rings, one inside the other. That can happen with huge impacts producing craters hundreds of kilometers across, but this one is small, only 230 meters from side to side – an American football stadium would just fit inside this crater.
By Unknown
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To the people of Chelyabinsk, we would like to offer our heartfelt sympathy and wish all injured a swift recovery.

"As of late afternoon local time, the Interior Ministry said about 1,000 people had been hurt, though the vast majority of injuries are not thought to be serious.

Find out more at CNN.