The International Space Station (ISS) is humanity's most expensive object and has been in orbit for 25 years. Read its fascinating history, told in 25 numbers.

This video explores the Apollo Lunar Module, the spacecraft that transported astronauts to the moon's surface. It details the structure of the Lunar Module, which is split into the ascent and descent ...

For the first time in its 25-year history, all eight docking ports on the International Space Station (ISS) are occupied, according to NASA. The rare "orbital traffic jam" occurred after Northrop ...

For the first time in its 25-year history, all eight docking ports on the International Space Station are occupied, according to NASA. The rare "orbital traffic jam" occurred after Northrop Grumman's ...

The Canadarm2 robotic arm releases Northrop Grumman’s Cygnus XL cargo craft after it was installed on the Earth-facing port of the Unity module on Sept. 18. Mark is based in Houston, where he has ...

Running a day late because of software issues, Northrop Grumman's Cygnus XL cargo ship caught up with the International Space Station early Thursday and then stood by while the lab's robot arm latched ...

Running a day late, Northrop Grumman’s Cygnus XL cargo freighter pulled alongside the International Space Station on Thursday, delivering more than 5 tons of supplies and experiments to the lab’s ...

The Cygnus XL cargo craft is maneuvered by the Canadarm2 robotic arm toward the International Space Station’s Unity module for installation. Credit: NASA Northrop Grumman’s inaugural Cygnus XL ...

A whopping 11,000 pounds of supplies and scientific instruments that were headed to the International Space Station are in limbo after a high-profile malfunction. Northrop Grumman’s Cygnus XL ...

An earlier version of Cygnus approaches the ISS. The service module, with the main thruster, is as the top of the spacecraft. Credit: NASA PARIS — NASA is delaying the arrival of a Cygnus spacecraft ...

Northrop Grumman’s upgraded Cygnus XL vehicle experienced an engine issue on Tuesday, delaying its arrival to the International Space Station until further notice. This is the first flight of the ...