Back to Article List This week in pictures: September 1–7, 2012 In the past seven days, NASA's Dawn spacecraft departed the asteroid Vesta, Curiosity began stretching its arm, scientists discovered unexpected lithium in a star in globular cluster M4, and more. By Astronomy Staff | Published: September 7, 2012
Exoplanets, Robotic Spaceflight, Science, Space Exploration Astronomers discover disk around star in another galaxy for the 1st time ever