The bounds on Ramsey numbers, which describe relationships between nodes in a network, have been narrowed.
Scientists are taking a closer look at the afterglow left by the brightest gamma-ray burst ever recorded, and what they see doesn't fit with any theoretical models.
Astronomers used gravitational lensing and supercomputers to identify the colossal black hole, which is among the largest ever found.
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.