SpaceWatchtower

                                                                       This graphic shows how a ground-based laser system may be able to cl...

                                                  Photograph of astronomer Harlow Shapley, who discovered a century ago that the Milky W...

January could be called the month of the Moon! Two Full Moons occur in January, January 1 and  January 31. The Full Moon of January 1 is t...

This diagram shows the position of the Earth, in relation to the Sun, at the time of the Winter Solstice, as well as the other solstice an...

One possible concept for a Laser-sail mounted on a nano-space probe, which could reach the Alpha Centauri star system, possibly as early a...

The largest and closest Full Moon of 2017 comes on December 3 at 10:47 a.m. EST / 15:47 UTC; some people refer to this as a so-called ...

The U.S. Navy's USS Ponce amphibious transport ship with the world's first active Laser Weapons System (LaWS). Will spacecraft som...