Supergiant stars are beasts! Their life is a fight between gravity pushing in and heat pushing out. They fuse heavier and heavier elements in their core until they get to iron. They can’t fuse any more. Iron absorbs more energy than it returns, so gravity takes over. The star’s core collapses and the star dies in an explosive supernova that outshines its entire galaxy.
The heat of a supernova fuses new elements during the explosion, which are then spread out into space via the nebula remnant. Nebulae are the birthplaces of new stars and solar systems.
The iron in your blood came from one of the most powerful explosions in the universe.
The end of heartless b*tches
This realistic 3D-printed silicon heart could help people in need of heart transplants when there are not enough donors.
A big grab for humanity
February 17, 2010 – Astronaut Nicholas Patrick works a 5-hour, 48-minute shift outside the International Space Station. Hang on!
(NASA)
So the other night during D&D, I had the sudden thoughts that:
1) Binary files are 1s and 0s
2) Knitting has knit stitches and purl stitches
You could represent binary data in knitting, as a pattern of knits and purls…
You can knit Doom.
However, after crunching some more numbers:
The compressed Doom installer binary is 2.93 MB. Assuming you are using sock weight yarn, with 7 stitches per inch, results in knitted doom being…
3322 square feet
Factoring it out…302 people, each knitting a relatively reasonable 11 square feet, could knit Doom.
Apply independently produced drug to the burnt area
Roommate -> roomsister
November 28 2017
Afternoon study session at my university’s library with my astronaut friend @redplanet44 ☆
Biomimicry
Nature inspires innovation. An international team lead by researchers at Technion – Israel Institute of Technology, together with ESRF -the European Synchrotron, Grenoble, France- scientists, have discovered how a brittle star can create material like tempered glass underwater. The findings are published in Science and may open new bio-inspired routes for toughening brittle ceramics in various applications that span from optical lenses to automotive turbochargers and even biomaterial implants.
A beautiful, brainless brittle star that lives in coral reefs has the clue to super tough glass. Hundreds of focal lenses are located on the arms of this creature, which is an echinoderm called Ophiocoma wendtii. These lenses, made of chalk, are powerful and accurate, and the deciphering of their crystalline and nanoscale structure has occupied Boaz Pokroy and his team, from the Technion-Israel Institute of Technology, for the past three years. Thanks to research done on three ESRF beamlines, ID22, ID13 and ID16B, among other laboratories, they have figured out the unique protective mechanism of highly resistant lenses.
As an example, take tempered glass. It is produced by exerting compressive pressure on the glass which compresses it and leaves it more compact than in its natural state. Glass tempering is performed by rapidly heating and then rapidly cooling the material. In this process, the outside of the material cools more quickly than the inside and thereby compresses the inside. Ophiocoma wendtiilenses are created in the open sea, at room temperature, unlike tempered glass. “We have discovered a strategy for making brittle material much more durable under natural conditions. It is ‘crystal engineering’ and tempering without heating and quenching – a process that could be very useful in materials engineering,” explains Pokroy.
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It`s gonna be Moon Soon season in India!! @neysastudies
The last time any country put boots or, rather, little metal feet, on the Moon was in 2013, when China landed its Yutu rover there. Before that, you’d have to look back to the 1970s to find anything built by Earthlings that camped out on the surface of the Moon.
But in 2018, India says it will be ready to join the ranks of the moon lander. The Indian Space Research Organisation (ISRO) is getting ready to land its very first lunar rover by the end of March 2018, as part of its Chandrayaan-2 mission.
Continue Reading.
Houston TX (SPX) Feb 28, 2018 Three members of the Expedition 54 crew aboard the International Space Station (ISS), including NASA astronauts Mark Vande Hei and Joe Acaba, returned to Earth on Tuesday after months of performing research and spacewalks in low-Earth orbit. Vande Hei, Acaba and cosmonaut Alexander Misurkin of the Russian space agency Roscosmos landed at 9:31 p.m. EST (8:31 a.m. Feb. 28 in Kazakhstan) sout Full article
A new technique developed by MIT physicists could someday provide a way to custom-design multilayered nanoparticles with desired properties, potentially for use in displays, cloaking systems, or biomedical devices. It may also help physicists tackle a variety of thorny research problems, in ways that could in some cases be orders of magnitude faster than existing methods.
The innovation uses computational neural networks, a form of artificial intelligence, to “learn” how a nanoparticle’s structure affects its behavior, in this case the way it scatters different colors of light, based on thousands of training examples. Then, having learned the relationship, the program can essentially be run backward to design a particle with a desired set of light-scattering properties – a process called inverse design.
The findings are being reported in the journal Science Advances, in a paper by MIT senior John Peurifoy, research affiliate Yichen Shen, graduate student Li Jing, professor of physics Marin Soljacic, and five others.
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Two most important phenomens to live for: coffee and ISS in the space
On Earth, a double shot mocha latte with soymilk, low-fat whip and a caramel drizzle is just about as complicated as a cup of coffee gets. Aboard the International Space Station, however, even just a simple cup of black coffee presents obstacles for crew members.
Understanding how fluids behave in microgravity is crucial to bringing the joys of the coffee bean to the orbiting laboratory. Astronaut Don Pettit crafted a DIY space cup using a folded piece of overhead transparency film. Surface tension keeps the scalding liquid inside the cup, and the shape wicks the liquid up the sides of the device into the drinker’s mouth.
The Capillary Beverage investigation explored the process of drinking from specially designed containers that use fluid dynamics to mimic the effect of gravity. While fun, this study could provide information useful to engineers who design fuel tanks for commercial satellites!
The capillary beverage cup allows astronauts to drink much like they would on Earth. Rather than drinking from a shiny bag and straw, the cup allows the crew member to enjoy the aroma of the beverage they’re consuming.
On Earth, liquid is held in the cup by gravity. In microgravity, surface tension keeps the liquid stable in the container.
The ISSpresso machine brought the comforts of freshly-brewed coffees and teas to the space station. European astronaut Samantha Cristoforetti enjoyed the first cup of espresso brewed using the ISSpresso machine during Expedition 43.
Now, during Expedition 53, European astronaut Paolo Nespoli enjoys the same comforts.
Astronaut Kjell Lindgren celebrated National Coffee Day during Expedition 45 by brewing the first cup of hand brewed coffee in space.
We have a latte going on over on our Snapchat account, so give us a follow to stay up to date! Also be sure to follow @ISS_Research on Twitter for your daily dose of space station science.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.