The edge of the Solar System awaits, and Pulsar Fusion is one of the first companies aiming to reach it with its development of a nuclear-powered space engine to bring humans there.

The cold and unforgiving environment in outer space presents a lot of challenges, with one of those being power generation. Solar arrays can be capable enough for some missions, but others venture out ...

The study also explained a long-standing puzzle as to why electrons often appear delayed after solar eruptions.

[Gallery: The Solar System's Deep-Space Probes] Most of the CAT components have been built and tested individually, and the team is making good progress toward incorporating them into a unified ...

New solar arrays are part of SpaceX's 22nd supply run to the International Space Station.