Peering into the past, we find that our ancestors held a surprisingly advanced understanding of the stars and constellations. Their knowledge, as revealed in ancient texts, often rivals our modern ...

Star maps and charts are a mainstay of both amateur and professional sky observers. Whether it’s on a simple seasonal map or in a comprehensive atlas, the stars listed appear steadfast and constant.

One of the best places to study stars is inside "open clusters," which are groups of stars that formed together from the same material and are bound together through gravity. Open clusters act as ...

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 ...

At SLAC National Accelerator Laboratory in Menlo Park on Wednesday morning, researchers focused a powerful X-ray machine on pages of parchment from a medieval desert monastery, looking to reveal ...