The moment the Sun reaches its southernmost point in the sky marks the December solstice, the official beginning of winter in the Northern Hemisphere (where it is called the winter solstice) and a time of great celebration in many northern cultures.
If it’s clear Wednesday night and Thursday before dawn, keep a lookout high overhead for the "shooting stars" of the Geminid meteor shower.
The prevailing view of the universe has just passed a rigorous new test, but the mysteries of dark matter and dark energy remain frustratingly unsolved.
Sky-Watcher unveiled its Stargate Truss-Tube Dobsonian Telescopes at NEAF. These large 18- and 20-inch f/4 reflectors start at $5,999.
From oxygen-thin mountaintops to barren deserts to the South Pole, many of the world’s most powerful telescopes are in distant, inhospitable environments. Three researchers share their adventures pursuing science at the farthest corners of the world.
This week the big near-Earth asteroid 3122 Florence is passing relatively close by, and skywatchers with even modest telescopes have a chance to spot it.