Back to Article List The week in pictures: July 23–29, 2011 This week's news featured a soccer ball-like planetary nebula, solar "spicules," a trio of galaxies, a new meteor shower, a martian crater, and more. By Astronomy Staff | Published: July 29, 2011
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?
