Old satellites and other space junk fall toward Earth every day, and the shock waves they create could be used to track their ...

IR sensors rely on an emitter (IR LED) and a detector (photodiode or photoresistor) to measure infrared light and convert it ...

That would make it thousands of times more massive than any moon orbiting a solar system plane  — so massive it could make ...

Greenland's strategic location makes it a focal point if there were to be a nuclear conflict involving Russia, China and the ...

The epitome of wealth and opulence, the majority of the precious Crown Jewels date back centuries. And, of course, they're ...

The United States is home to some of the best-looking buttes in the world. These geological landmarks number among the most ...

Do you have stuff? Want to not lose your stuff? Apple's tiny trackers are now essential items. Here's how to make them work ...

Prior to announcing on Jan. 21 that he has reached a “framework of a future deal” on Greenland with the secretary general of NATO, President Donald Trump had insisted that the United States needed to ...

As the threat of falling spacecraft increases, using earthquake sensors to detect the effects of their sonic booms could ...

Space debris entering the Earth’s atmosphere moves faster than the speed of sound and it's hard to predict where it will ...