Like shards of shattered glass caught in a spotlight, the stars appear deceptively passive in the night sky. Yet, each…
If the universe extends forever and if it's full of stars, why is the night sky dark? This is a…
The ability for convex and concave transparent objects to enlarge or reduce had been known since Antiquity and by the…
Our home galaxy, the Milky Way, is estimated to have 400 billion stars, give or take 200 billion, but less…
Prior to 1957, virtually all photographs of the sky were produced as monochrome, black and white images. In that year,…
Arc lights had been used in lighthouses for several years when Thomas Edison began seeking a way to improve them.…
Evidence of Astronomy has been found in most ancient cultures. The Egyptians, the Babylonians, the Mesopotamians, the Chinese- and in…
For many years, there were three popular theories that tried to explain why Earth's satellite hangs in our skies. One…
Every clear evening, as twilight dissolves into night, untold thousands of telescopes scattered across the globe turn toward the great…
Stars arise at the heart of great interstellar clouds that have collapsed under their own weight. These free-floating clouds are…