Spacecraft

Solving the mysteries of Uranus and Neptune

Neptune seen by Voyager 2 in 1989. Photo: NASA/JPL-Caltech/Kevin M. Gill
Neptune as seen by Voyager 2 in 1989. Photo: NASA/JPL-Caltech/Kevin M. Gill

Uranus and Neptune — the long-neglected ice giants in the outer solar system — could be the keys to unlocking the mysteries of planets far from our solar system.

Why it matters: Scientists have found a whole bunch of planets around the size of Neptune orbiting stars light-years from our own, so learning more about our own ice giants could help us piece together exactly what's going on with those distant worlds.

SpaceX is betting on rocket rideshares

A Falcon 9 rocket launch in 2018. Photo: SpaceX
A Falcon 9 rocket launch in 2018. Photo: SpaceX

SpaceX is offering up its Falcon 9 rockets for regular rideshares to orbit for small payloads, the company announced Monday.

Why it matters: Usually small satellites are forced to hitch rides on a Falcon 9 with a larger payload bound for orbit, but these rideshares won't need to wait on a primary mission for launch.