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Rosetta's Philae: ESA Lands Probe on Comet

Another space first: the European Space Agency's Rosetta mission landed its Philae probe on a comet this morning, but will it stick?

Mercury, Moon May Still Be Erupting

Two objects that should be old and dead show surprising activity. Other indications of youthfulness in the solar system are noted.

Of Planets and People

Here's a quick tour of the planets to see what's newsworthy.

Rosetta and the Stone

A historic comet rendezvous mission begins today after ten years in space.

New Worlds

Members of our solar system that were little more than points of light for decades or centuries have now become familiar family members, seen up close and personal by spacecraft. Here are introductions to three worlds that are no longer mere names in a catalog. Even the names of members in this trio may be unfamiliar to some. They’re worth getting to know.
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