SyFy explores where the water and and possible Martians have gone.
We know the current D/H ratio on Mars by looking at water in its atmosphere, and we can also see what it was like billions of years ago by looking at Martian meteorites, chucks of rock from Mars that fell to Earth after a large asteroid impact sent them into space. Sure enough, the meteorites show a lower ratio, meaning Mars used to have more water.
However, combining that information with how water escapes from Mars to space, that implies the amount of water on Mars long ago was around 50 – 240 meters depth if spread out over the whole planet, which is at the very lowest part of the range of 100–1,500 meters depth the geological evidence indicates. This in turn implies a lot of that ancient water is missing.
Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards
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.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.