How astronomers used gravitational lensing, a space-time trick predicted by Einstein, to detect a black hole measuring 30 billion times the mass of the sun. Donald Trump Dealt Blow by Texas Judge ...

America might have landed on the moon, but Russia drilled the deepest man-made hole on Earth. Since the early 1960s, scientists have attempted to drill down to the Earth's mantle. It took 20 years ...

5 when engineers put a replica of the world's largest fuel tank ... liftoff and flight stresses" before engineers blew the giant hole in its side. The tank blew after taking on more than 260 ...