Russia isn’t likely to put nuclear missiles in space, but their reported anti-satellite weapon is just as alarming. An expert on nuclear strategy explains.

Spaceplanes seemed out of favour when the shuttle was retired in 2011; they now seem to be making a comeback.

All who testified before a congressional subcommittee claimed that UFOs pose a threat to national security, though there’s still no public evidence that UFOs are extraterrestrial.

The disruption of Taiwan’s chip industry would affect everyone.

There are thousands of sightings of UFOs – or ‘unidentified aerial phenomena’ as the US government prefers to call them – every year.

Balloons can still be useful for gathering intelligence when used alongside satellites and aircraft.

Military emissions reporting is only voluntary. And what we cannot see, they will not cut.

Nearly 60 years after a radiation-leaking reactor was removed from a US Army base on the Greenland ice sheet, the military is exploring portable nuclear reactors again.

Nearly 60 years after a radiation-leaking reactor was removed from a US Army base on the Greenland ice sheet, the military is exploring portable nuclear reactors again.

The rate of death by suicide is rising among veterans. The most common stressor is a serious relationship difficulty.