When Apollo 17 astronauts collected a small rock from the moon more than 50 years ago, they had no way of knowing it would ...
Astronomers have found a 19m-wide space rock that has been quietly hanging around Earth since 1957. This quasi-moon poses no threat.
Interesting Engineering on MSN
Can orbital refueling save spaceflight from debris? – Part 1
Another way to reduce costs is with On-Orbit Refueling (OOR), also known as in-space propellant transfer. NASA has researched this concept for decades to facilitate missions to the Moon and beyond. If ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback