Fear The Prius? A Toyota Prius hybrid model car waits for customers at a Toyota dealer in Hollywood, Calif., on March 10. Concerns about the cars suddenly accelerating dogged the company earlier this year.
Mark Ralston/AFP/Getty Images
The inner four planets of the Gliese 581 system orbit the host star, a red dwarf 20 light-years from Earth, in this rendering from a National Science Foundation artist. The planet in the foreground has a 37-day orbit and, like Earth, is far enough from the star for liquid water to exist.
Lynette Cook/via NASA
One of the goals of the ATLAS detector at the Large Hadron Collider is to search for the Higgs boson, a particle that scientists say gives everything in the universe mass. For scale, note the workers toward the bottom of the image.