This week in pictures: September 29–October 5, 2012

In the past seven days, astronomers discovered two stellar-mass black holes in globular cluster M22, researchers spied a surprisingly cold region high in the Venus' atmosphere, NASA's Spitzer Space Telescope narrowed down the rate of the universe's expansion, and more.
By | Published: October 5, 2012 | Last updated on May 18, 2023