7. Heavy-metal frost, methane fog, and more: 9 photos of the wildest weather in the universe



  9. “Since the end of the Cold War, America has been space’s sole superpower, and it’s not ceding that status without a fight. But in this hushed race for control of the orbit around Earth, China doesn’t need to control everything to win; it just needs to take away the U.S.’ strategic advantage. And it’s doing so by turning the U.S.’ own strength against it.”

    — Eugene Chow, in The U.S. is in an under-the-radar space race with China — and it’s losing


  10. Mystery solved? When Fido spins in circles on his walk before choosing a bathroom spot, he may be aligning himself with Earth’s magnetic field.


  11. 11 billion

    The number of possibly habitable planets scientists calculated in our galaxy.

    The biggest scientific discoveries of 2013


  12. Whoa: China’s “Jade Rabbit” just became the first spacecraft on the moon since 1976.