The head of the Trump administration's Golden Dome program says the technologies needed to create such an ambitious space-based missile defense system already exist.
The United States Space Force is undertaking its largest training exercise ever, in order to demonstrate that it is "prepared to fight and win in space."
MethaneSAT, the first satellite made by an environmental nonprofit organization, was designed to monitor some of the world's largest industrial contributors of greenhouse gas emissions. Now, without power, the spacecraft's mission has abruptly ended.
Cheap, uninsured satellites are creating more space junk — and it's starting to rain down on our heads.
A new Chinese refueling spacecraft met up with an older satellite in high Earth orbit this month, apparently marking a step forward in orbital servicing.
Light streaks caused by passing satellites mar images taken by the world's most expensive telescopes. The problem is set to get worse.
In-orbit servicing and refueling could help curb the environmental harm done by the space industry. But will operators subscribe to the greener business model? The jury is out.
Research into the impacts of rocket and satellite air pollution is being cut by the Trump administration. Experts say the cuts come at the worst time.
U.S. President Donald Trump unveiled a plan for his ambitious "Golden Dome" missile defense shield this week, stating it will cost $175 billion and take some three years to develop.
Europe's Proba-3 satellites have demonstrated ultra-precise formation flying in orbit for the first time, a milestone with big implications for both science and future space missions.
