Astronomers have unveiled one of the most ambitious maps yet of the early universe, revealing a vast "sea of light" between galaxies that had remained otherwise hidden in previous surveys.

Just like there are 50 U.S. states, each with well-defined boundaries, 88 bounded constellations dot the celestial sphere. Of these about 55 of them are visible from mid-northern latitudes and 59 from ...

A unique technique allowed astronomers to see the early universe as a "sea of light" and explore the effects of gravity and dark energy on cosmic evolution.

Constellations through the ages -- Constellations of the zodiac -- An astronomy primer -- Watching the skies -- How this book is organized -- The greek alphabet -- Map of the northern sky -- Map of ...

Planet is building Pelican satellites to gather imagery with a resolution as high as 40 centimeters per pixel. Credit: Planet KIHEI, Hawaii — The Federal Communications Commission is requiring more ...