Hexagonal dendrite snowflake as captured by the Electron Microscopy Unit of the USDA Beltsville Agricultural Research Center.
Polarization-microscope image of C-Phase liquid crystal, taken by Wikimedia Commons user "Minutemen."
A frilled dinosaur found in Montana, as imagined by science illustrator Mariana Ruiz Villarreal.
Click for much bigger version. Panoramic photo of the Racetrack Playa in Death Valley National Park, by Dan Duriscoe.
A technician looks over history’s first satellite prior to its October 5, 1957 launch. Happy anniversary, outer space.