Xiaohan Wang was driving near Keluke Lake in Qinghai Province in China, but stopped to snap this lovely image of airglow bands framing the Milky Way.
Why would the sky glow like a giant repeating rainbow? Airglow. Now air glows all of the time, but it is usually hard to see. A disturbance however -- like an approaching storm -- may cause noticeable rippling in the Earth's atmosphere. These gravity waves are oscillations in air analogous to those created when a rock is thrown in calm water. Red airglow likely originates from OH molecules about 87-kilometers high, excited by ultraviolet light from the Sun, while orange and green airglow is likely caused by sodium and oxygen atoms slightly higher up.
Below is a lovely timelapse of airglow above the Roque de Los Muchachos Observatory in the Canary Islands:
• Colorful Airglow Bands Surround Milky Way (NASA)
A year ago, the Norwegian Consumer Council commissioned a study into kids' smart watches, finding that they were incredibly negligent when it came to security and incredible greedy when it came to surveillance: a deadly combination that meant that these devices were sucking up tons of sensitive data on kids' lives and then leaving it […]
Circuitmess's fully funded Makerphone kickstarter is raising money to produce open source hardware smartphone kits to teach kids (and grownups) everything from soldering to programming.
The new parental controls in Ios 12 have all the same problems that all parental controls have: they overblock legit material (with a bias for sex-ed, especially sex-ed targeted at girls and queer kids, including Teen Vogue) and underblock all kinds of other material (neo-Nazi publications like The Daily Stormer and Reddit's pornographic /r/Gonewild are […]
When it comes to tech, smaller is better, and these items fit the bill both in terms of size and price. We’ve rounded up our favorite stocking-ready gadgets, most of which are already on sale – and you can take an additional 15% off any of them with the special code MERRY15. iPM 3-in-1 Fast […]
So you’ve got a good eye for pictures? We’ve got a good eye for deals. And this holiday, there are some solid deals out there for photographers. Check out some of our favorite recent discounts on gear, software, and e-learning for photogs of any experience. Gadgets RevolCam: The Multi-Lens Photo Revolution for Smartphones This […]
Take a scroll through any app marketplace and you’ll see that the doors are wide open for any game these days – and any game developer. Like any creation, virtual or analog, it all starts with an idea. And if you’ve got one of those, the Complete Unity Game Developer Bundle can walk you the […]