"We're trying to encounter an astronomical object that streaks through our solar system just once and we don’t want to miss the opportunity." ...

Interstellar objects are among the last unexplored classes of solar system objects, holding tantalizing information about ...

The heliosphere, a cosmic bubble formed by the Sun, protects our solar system from interstellar threats and influences life's ...

A NASA mission, IMAP, will investigate and map the sun's particles and energy across the entire heliosphere, using a ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA’s twin ...

To save energy for further interstellar exploration ... After all, the two spacecraft have traveled a combined 29 billion miles to become the farthest human-built objects from Earth.

In a potential step toward sending small spacecraft to the stars, researchers have developed an ultra-thin, ultra-reflective ...

Voyager 1 crossed into interstellar space, or the space between stars, in 2012, and Voyager 2 did the same in 2018. The probes took different trajectories. Voyager 1 is traveling up away from the ...

Voyager 1 crossed into interstellar space, or the space between stars, in 2012, and Voyager 2 did the same in 2018. The probes took different trajectories. Voyager 1 is traveling up away from the ...