This article deals with a guidance law for impact angle control (IAC) in the 3-D space. Extended from the 2-D IAC law, the proposed guidance law is derived using a quaternion. The general form of the ...

Strange New Worlds season 2 continued its exploration of the 23rd century with Captain Christopher Pike and the crew of the USS Enterprise facing an array of complex missions.

AI-designed materials cool better than paint and save energy. Their uses span homes, clothes, and space tech. A new class of ...

So asking, " Where's the center of the universe? " is somewhat like asking, "Where's the center of the balloon's surface?” There simply isn’t one. You could travel along the surface of the balloon in ...