Voting resources, early voting, and poll worker information - VOTE. ... Adafruit is open and shipping.
0

The earth’s water is older than the sun

NewImage

Via Discover.

The sun, at 4.6 billion years old, predates all the other bodies in our solar system. But it turns out that much of the water we swim in and drink here on Earth is even older.

A new model of the chemistry of the early solar system finds that up to half the water now on Earth was inherited from an abundant supply of interstellar ice as our sun formed. That means our solar system’s moisture wasn’t the result of local conditions in the proto-planetary disk, but rather a regular feature of planetary formation — raising hopes that life could indeed exist elsewhere in the universe.

Dating Our Water

To determine the age of our solar system’s water, researchers focused on its ratio of hydrogen to deuterium, called “heavy hydrogen” because it has an extra neutron. Interstellar ice has a very high ratio of deuterium to hydrogen because it formed in very cold temperatures. Scientists already knew this from looking at the composition of comets and asteroids.

But, confounding the matter, deuterium levels in the solar system’s water have also been rising ever since the sun formed. So to determine if the sun alone could produce today’s levels of the isotope, researchers built a computer model that essentially wound back the clock to the beginning of the solar system and assumed no inherited deuterium.

However, the model system was incapable of producing deuterium to hydrogen ratios that were as high as those found in our solar system. Therefore, researchers estimate, 30 to 50 percent of our solar system’s water was already a part of the ancient molecular cloud that spawned the Sun and planets. They published their findings today in the journal Science.

Universal Water

If our solar system’s formation was typical, cosmically speaking, then the findings imply that interstellar ices are in healthy supply for all up-and-coming planetary systems. And since all life we know of depends on water, that news improves the odds that other planetary systems have what it takes to support life.

A new twist, then, on the Rime of the Ancient Mariner: “Water, water everywhere, and every planet can have a drink.”

Read more.



Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know – adafruit.com/vote

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.

Join 24,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

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.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Rub’n’buff

Electronics — Multimeter Bandwidth – AC Signal

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 6 Release Candidate, new hardware & more! #Python #Adafruit #CircuitPython #ElectronicHalloween @micropython @ThePSF

Adafruit IoT Monthly — Matrix Portal, Solar Lawn Sprinkler and more!

Microsoft MakeCode — micro:bit version 2 Announced!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — BACK IN STOCK – Adafruit 2.9″ Grayscale eInk / ePaper Display FeatherWing – 4 Level Grayscale

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.