Since the discovery of 2003 UB313, larger than Pluto, there's been a lively debate going on in many places about what makes a planet. There's now an article in Nature talking about a proposal that would address the controversy
At a press briefing, the co-discoverers of the so-called "10th planet" 2003 UB313 gave an update on what is known about this and the other two scattered Kuiper Belt bodies that were announced at the time: 2003 EL61 and 2005 FY9.
According to Jason Perry, the much-anticipated Titan-7 RADAR imagery across Titan's southern hemisphere may have been lost due to an error on Cassini's solid state recorder. That will be very sad if it turns out to be true.
Spirit has returned enough pictures from the summit [summit
#1] of Husband Hill for the Mars Exploration Team to have put together
a 240-degree color panorama of her view, which they released at a news conference
today, held at NASA headquarters in Washington D.C. In coming days, the rover
will return the rest of the images to complete the full, 360-degree, color