Astronomers used aperture masking interferometry at Keck to directly image the youngest known planet. We can see that LkCa-15-b is a hot protoplanet with cool dust and gas still falling in. This protoplanet is 5 times younger than the previous youngest planet.
Here is an article on Wired Science:
http://www.wired.com/wiredscience/2011/10/newborn-planet/
the Keck press release:
and the paper on the arXiv:
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