The week in pictures: April 14–20, 2012

In the past seven days, astronomers found a mysterious lack of dark matter in the Sun's neighborhood, WISE data revealed more than 200 blazars, Hubble released a glimpse at aurorae on Uranus, and more.
By | Published: April 20, 2012 | Last updated on May 18, 2023

“The week in pictures” highlights the amazing discoveries and cutting-edge research that resulted in magnificent photos and illustrations in the past week’s News section. Scroll through the photos, comment on your favorites, and click links to learn more about the science behind the pictures. We hope “The week in pictures” will not only highlight all our beautiful universe has to offer but also summarize the important stories of the past seven days in case you missed anything.