Asteroid Crash Course!

Glowing bandages can reduce the chances of antibiotic-resistant bugs

Why you should always buy the men’s version of almost anything

It's a good principle to live by, based on this new discovery.

The New York City Department of Consumer Affairs compared nearly 800 products with female and male versions — meaning they were practically identical except for the gender-specific packaging — and uncovered a persistent surcharge for one of the sexes. Controlling for quality, items marketed to girls and women cost an average 7 percent more than similar products aimed at boys and men.

This is the follow-up to squine and cosquine, and I find students find it really cool. Are there any other shapes someone has done this for?

Lunokhod 1, first robotic rover to visit another world, landed on the moon 45 yrs ago today.

The upper atmosphere of the Sun is dominated by plasma filled magnetic loops (coronal loops) whose temperature and pressure vary over a wide range. The appearance of coronal loops follows the emergence of magnetic flux, which is generated by dynamo processes inside the Sun. Emerging flux regions (EFRs) appear when magnetic flux bundles emerge from the solar interior through the photosphere and into the upper atmosphere (chromosphere and the corona). The characteristic feature of EFR is the Ω-shaped loops (created by the magnetic buoyancy/Parker instability), they appear as developing bipolar sunspots in magnetograms, and as arch filament systems in Hα. EFRs interact with pre-existing magnetic fields in the corona and produce small flares (plasma heating) and collimated plasma jets. The GIFs above show multiple energetic jets in three different wavelengths. The light has been colorized in red, green and blue, corresponding to three coronal temperature regimes ranging from ~0.8Mk to 2MK. 

Image Credit: SDO/U. Aberystwyth

Neurologists have found a scientific explanation for your lack of motivation

If you often struggle to get yourself motivated - or you have friends who seem stuck in a permanent state of apathy - new research might help to explain your slacker tendencies. Scientists have discovered a collection of inefficient connections in certain parts of the brain, and these weak links could be making things more difficult for some of us to rouse ourselves into action...

It’s not (completely) your fault. -ScienceAlert

DJI’s drone safety system has you signing up to fly in some areas

Physicists have broken the record for the most accurate clock ever built

This could redefine what a second is.

Physicists in Germany have built the most accurate timepiece on Earth, achieving unprecedented levels of accuracy with a new atomic clock that keeps time according to the movements of ytterbium ions.

Called an optical single-ion clock, the device works by measuring the vibrational frequency of ytterbium ions as they oscillate back and forth hundreds of trillions times per second between two different energy levels. These ions are trapped within an ‘optical lattice’ of laser beams that allows scientists to count the number of ytterbium 'ticks’ per second to measure time so accurately, the clock won’t lose or gain a second in several billion years.

Until very recently, our most accurate time-keepers were caesium atomic clocks - devices that contain a 'pendulum’ of atoms that are excited into resonance by microwave radiation. It’s on these clocks that the official definition of the second - the Standard International (SI) unit of time - is based.

Li-Fi is 100 times faster than Wi-Fi

What’s next in high-speed Internet? Beams of light, flickering faster than the eye can see. A recent test by New Delhi-based startup Velmenni used “Li-Fi” to transfer data at 1 gigabyte a second. The futuristic tech uses LED lightbulbs to send the high speed data — which could have a great impact on our world.

Can we talk about this?

So there’s this physics journal that uses math and science to discuss the realities of fictional universes in a super legit, peer-reviewed manner?

And they did a thing on Frozen?

Combining research on the film?

With info on how water works and stuff?

Then applied math and chemistry (and other things in which I am not especially well versed) to reach this conclusion:

So.