Theoretically, Sunbird's tremendous speeds could cut mission times to Mars in half, from seven to eight months to about four.

A former NASA scientist explains how we know whether Blue Origin New Shepard made it to space, and how its altitude compares ...

Space debris grows rapidly, threatening satellites and future missions if cleanup efforts don't intensify now.

A British propulsion company is aiming to harness nuclear fusion and drastically cut travel times to far off places in space.

The satellites will travel at a speed of more than 17,000 miles per hour on ... KA-02 will also use a ULA Atlas V rocket ...

But as humanity rapidly increases the number of objects propelled into space ... drives the rocket’s cargo — whether a satellite or an astronaut capsule — to the speeds required to ...