SpaceX's Dragon spacecraft atop rocket Falcon 9 lifts off from Cape Canaveral in Florida in May 2012. The launch made SpaceX the first commercial company to send a spacecraft to the International Space Station.
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The Chinese flag is seen in front of a view of the moon at Beijing's Tiananmen Square in December, when China's first moon rover touched the lunar surface. That feat was widely celebrated — but observers believe the rover has now run into serious trouble.
Mark Ralston/AFP/Getty Images
Kepler-22b, seen in this artist's rendering, is a planet a bit larger than Earth that orbits in the habitable zone of its star. Some researchers think there might be "superhabitable" worlds that may not resemble Earth.
Live, from the moon, it's the space weather report: Data from a lunar orbiter is being used to create a music stream that reflects conditions in space. Here, an image created by NASA "visualizers" who used data from 2010 to show the moon traveling across the sun, as happens two or three times a year.
Coming At You: An image created by NASA combines two pictures from its Solar Dynamics Observatory. One shows the location of a large sunspot; the other shows Tuesday's massive solar flare.