Supersonic jets are making a comeback. Here’s what that means for air passengers
Last week, American company Boom Supersonic flew faster than the speed of sound with its XB-1 supersonic demonstrator aircraft. It’s now the first piloted non-military aircraft to break the sound ...
Two Grand Canyon-size valleys on the far side of the moon formed within 10 minutes ...
The extraordinary formations, each comparable in size to Earth’s Grand Canyon, are hidden on the far side of the moon — the side that always faces away from Earth — near the lunar south pole, where ...