Editor's Note: Launch of the Polaris Dawn mission, the first commercial flight to Earth orbit featuring a non-government, civilian spacewalk, has been delayed at least 24 hours, from 3:38 a.m. EDT ...

When the mission commences with the launch of a SpaceX Dragon capsule, four private astronauts will rocket into the upper reaches of Earth's orbit, where they will conduct the first-ever ...

Polaris Dawn plans to not only orbit Earth higher than any astronauts have in more than 50 years but to also feature the first private spacewalk. The mission was originally scheduled to launch ...

In his paper, Loeb proposes how an advanced civilization could rely on the latter process by engineering a black hole that would orbit its home planet. This black hole would be very small ...

The debris scattered by the spacecraft on impact also played a role in the disturbed equilibrium between the moon and its asteroid, shortening Dimorphos' orbit around Didymos. Interestingly ...

The debris scattered by the spacecraft on impact also played a role in the disturbed equilibrium between the moon and its asteroid, shortening Dimorphos' orbit around Didymos. Interestingly ...

The Dragon aircraft will orbit in an oval path, traveling as close to Earth as 118 miles and as far away as 870 miles—the farthest humans have traveled since the 1972 Apollo moon program.

And new spacecraft could soon have the capabilities to link up or engage with other satellites in orbit for repairs or refueling. Some of these spacecraft are already operating and serving ...

Four non-government astronauts are about to embark on what could become a defining mission to the upper reaches of Earth's orbit when Polaris Dawn potentially launches within a week. On the agenda ...

Because the Starlink constellation is positioned in Low Earth Orbit (LEO), it has an advantage over competitor systems which typically utilize geostationary satellites, helping to reduce latency and ...

This means TOI-1408 b completes an orbit in just 4.4 Earth days. This size and proximity to its star classifies TOI-1408 b as a "hot Jupiter," but remarkably, its newly discovered companion is ...