Who made the present-day official outlines of the 88 constellations and why do they contain so many zigzags?Caitlin ...

Imagining familiar images in the sky has always been an easy way to track the annual progress of the stars. Around the second century C.E., the Greek astronomer Claudius Ptolemy listed 48 “official” ...

The article recounts the author's personal journey into astronomy, highlighting several influential beginner astronomy guidebooks from various eras, including "Stars: A Guide to the Constellations," ...

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. Subscribe to our ...

If you explore the night sky it won't be long before you realize there is a lot of dust and gas up there. The interstellar dust between the stars accounts for 1% of the mass of the interstellar medium ...

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 ...