How Old Spy Satellites Helped Scientists Peek In on Shrinking Himalayan Glaciers
You know how the old sayin goes – reduce, reuse, recycle old spy satellites. Fun story from Atlas Obscura.
On multiple missions between 1971 and 1986, KH-9 HEXAGON satellites—also known as “Big Birds”—soared above China and Soviet terrain, imaging 877 million square miles of ground, according to the National Museum of the U.S. Air Force. The satellites were heftier than a school bus, Space.com reported; some weighed upwards of 30,000 pounds. Cameras were mounted so they could rotate as the satellite flew, and film was stored in four canisters that drifted back toward Earth via parachute and were intercepted by planes.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.