Mercury MESSENGER nears epic mission end
A spacecraft that carries a sensor built at the University of Michigan is about to crash into the planet closest to the sun—just as NASA intended.
Study finds small solar eruptions can have profound effects on unprotected planets
While no one yet knows what's needed to build a habitable planet, it's clear that the interplay between the sun and Earth is crucial for making our planet livable - a balance between a sun that provides energy ...
Explosions of Jupiter's aurora linked to extraordinary planet-moon interaction
On Earth, bursts of particles spewed by the Sun spark shimmering auroras, like the Northern Lights, that briefly dance at our planet's poles. But, on Jupiter, there's an auroral glow all the time, and new ...
Building to begin on Solar Probe Plus spacecraft
NASA's Solar Probe Plus mission—which will fly closer to the sun than any spacecraft has before—reached a major milestone last month when it successfully completed its Critical Design Review, or CDR.
Cluster satellite successfully shifts orbit
One of the four Cluster satellites has shifted its orbit to ensure a safe reentry when the time comes, as well as providing a rare opportunity to study how a satellite's exhaust plume interacts with the solar ...