If an astronaut outside the ISS has his or her tether broken, they do not fall to the Earth. Before the tether was broken, the astronaut was in orbit at…

Imagine you are sitting on a skateboard at the bottom of your drive and you need to get to the top. You could push off your garage door…

Humans with their technology developed on Earth could live on a tidally locked planet where neither day nor night exists. We used to think that such planets become…

The problem was not just the piece of foam that struck the wing, it was a failure of imagination — NASA had seen foam fall before and decided…

The United States has this thing where we learn from our mistakes. One of those mistakes was spacing twin engines as far apart as we did in the…

No, it is not. It used to have a thick atmosphere, perhaps thicker than Earth’s. It had that atmosphere for a couple of billion years and had oceans….

I have a friend who subscribes to the idea of a moon landing hoax. He refutes any evidence simply by expanding the scope of the hoax to include…

Obvious to casual inspection? A few thousand years for most technological objects, except for space junk in high orbits. Possibly a few hundred thousand years, for engineering works…

YES. This is true. The bronze casket obtained by the Secret Service shortly after Kennedy was pronounced dead in Parkland Hospital was used to transport his body back…