Back to Article List From the August 2011 issue What do the terms arcminutes (‘) and arcseconds (“) mean? Dennis Holt, Concordia, Kansas By Astronomy Staff | Published: August 29, 2011 William Zuback Astronomers use them to measure the separation between two objects, or the angular size of an object.
Science Ask Astro: If gravity is the weakest fundamental force, why is the Sun’s gravity so far-reaching?
Exotic Objects, Galaxies Astronomers detected two major targets with a single telescope – a mysterious signal and its source galaxy
Human Spaceflight, Science Ask Astro: How fast could a ship reach light-speed without crushing its human occupants?