The postponement, driven primarily by thick clouds, was the second scrub of the flight since an issue with the rocket on Saturday night.

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Fusion has long been the propulsion end-goal for interplanetary travel, and a U.K.-based company thinks on its way to ...

More about Katrina Miller Never miss a rocket launch, meteor shower ... nature but one that ebbs and flows through cosmic time. Is Pluto a planet? And what is a planet, anyway?

The Sunbird concept is for the fusion-powered ‘tugs’ to be permanently based in space, able to dock with spacecraft and ...

Professional astrologer Steph Koyfman reads your monthly horoscope—and spells out how it may shape your travels.

Radioisotope thermoelectric generators do not rely on chemical reactions like the batteries in your phone. Instead, they rely ...

Satellites come in all shapes and sizes, but there aren't any that look quite like SPHEREx, an infrared observatory NASA ...

The Mars Curiosity and Perseverance rovers and the New Horizons spacecraft that visited Pluto in 2015 have all used RTGs ...

Machine learning models show the rocket could potentially propel a spacecraft with a mass of about 1,000kg (2,200lb) to Pluto in four ... Rather than launch from Earth each time, several Sunbirds ...