In this new work, they looked at the valley networks, systems of interconnected tributaries that have been carved into the surface of Mars, mostly in the southern hemisphere and equatorial regions. On first glance, they look very much like river valleys on Earth, carved by flowing water that’s fed by either rain or a process called groundwater sapping, erosion from water that originally bubbles up from underground like in a spring or seeps out of rocks and sediment.
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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.
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