The magnificent Ring Nebula is a stunning sight for skygazing this week
I would guess that almost any good astronomy book will contain a picture of what can best be described as a "smoke ring" in the sky. Others may call it…
I would guess that almost any good astronomy book will contain a picture of what can best be described as a "smoke ring" in the sky. Others may call it…
Sometime in the next few years—no one knows exactly when—three NASA satellites, each as heavy as an elephant, will plunge into darkness.They are already drifting, losing height bit by bit.…