Back to Article List From the July 2011 issue An open letter to Kaoru Ikeya September 2011: A successful comet-hunter reminds us all how important it is to look up. By David H. Levy | Published: July 25, 2011 A successful comet-hunter reminds us all how important it is to look up.
Science Ask Astro: If gravity is the weakest fundamental force, why is the Sun’s gravity so far-reaching?
Human Spaceflight, Science Ask Astro: How fast could a ship reach light-speed without crushing its human occupants?