The bounds on Ramsey numbers, which describe relationships between nodes in a network, have been narrowed.
Researchers have discovered a vast cranium collection that was likely left as an offering to Ramesses II, a much-loved pharaoh who died around 1,000 years before the skulls were embalmed.
High magnification views and big lenses make the Skymasters ideal for stargazing or getting a view of far-away subjects, even into twilight hours, but you'll need a tripod.
Astronomers used gravitational lensing and supercomputers to identify the colossal black hole, which is among the largest ever found.