Dark Energy Dark Matter The two largest pieces of the Universe that we know the least about, yet nothing less than the ultimate fate of the Universe will be determined by them. (Illustration: NASA/CXC/M.Weiss) The Universe in a Jelly Bean Jar
Season to Season: Earth's Equinoxes & Solstices (Infographic)
Earth by Michael König. Time lapse sequences of photographs taken by the crew of expeditions 28 & 29 onboard the International Space Station from August to October, who to my knowledge shot these pictures at an altitude of around 350 km.