Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by ... X-Ray Flashes from a Nearby Supermassive Black Hole ...
Acer Aspire E3-111 is a Windows 8.1 laptop with a 11.78-inch display that has a resolution of 1366x768 pixels. It is powered by a Celeron Dual Core processor and it comes with 2GB of RAM. The Acer ...