A new mission designed to better understand the heliosphere will be the first to map in three dimensions how the solar corona becomes the solar wind.

In an effort to conserve Voyager 2's dwindling energy and extend the spacecraft's mission, NASA has shut down another of its ...

"Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever ...

NASA's Parker Solar Probe regularly flies closer ... as it journeys to the outer boundary of the heliosphere, called the heliopause, located about 120 astronomical units (17.95 billion kilometers ...