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Nov 19, 2020
“Phantom Star of the Blue Ring Nebula” –Mystery Solved
Posted by Genevieve Klien in categories: cosmology, evolution
“We were in the middle of observing one night, with a new spectrograph that we had recently built, when we received a message from our colleagues about a peculiar object composed of a nebulous gas expanding rapidly away from a central star,” said Princeton University astronomer Guðmundur Stefánsson, a member of the team that discovered a mysterious object in 2004 using NASA’s space-based Galaxy Evolution Explorer (GALEX). “How did it form? What are the properties of the central star? We were immediately excited to help solve the mystery!”
A 16-Year-Old Mystery
NASA announced today that it has solved the 16-year-old mystery of the object –similar in size that of a supernova remnant–unlike any they’d seen before in our Milky Way galaxy: a large, faint blue cloud of gas in space with a living star at its center. Subsequent observations revealed a thick ring structure within it, leading to the object being named the Blue Ring Nebula.
Nov 19, 2020
Ransomware attack brings Columbus County’s website down
Posted by Genevieve Klien in category: cybercrime/malcode
WILMINGTON, N.C. (WECT) — What was initially reported as a website ‘outage’ by Columbus County turns out to be something more sinister, a directed attack at the county’s web hosting service.
Nov 19, 2020
Versatile building blocks make structures with surprising mechanical properties
Posted by Genevieve Klien in categories: particle physics, robotics/AI, transportation
Researchers at MIT’s Center for Bits and Atoms have created tiny building blocks that exhibit a variety of unique mechanical properties, such as the ability to produce a twisting motion when squeezed. These subunits could potentially be assembled by tiny robots into a nearly limitless variety of objects with built-in functionality, including vehicles, large industrial parts, or specialized robots that can be repeatedly reassembled in different forms.
The researchers created four different types of these subunits, called voxels (a 3D variation on the pixels of a 2D image). Each voxel type exhibits special properties not found in typical natural materials, and in combination they can be used to make devices that respond to environmental stimuli in predictable ways. Examples might include airplane wings or turbine blades that respond to changes in air pressure or wind speed by changing their overall shape.
The findings, which detail the creation of a family of discrete “mechanical metamaterials,” are described in a paper published today in the journal Science Advances, authored by recent MIT doctoral graduate Benjamin Jenett PhD ’20, Professor Neil Gershenfeld, and four others.
Nov 19, 2020
SpaceX will launch Israel’s second Astronaut aboard Crew Dragon
Posted by Genevieve Klien in category: space travel
Axiom Space, a start-up from Houston, Texas, signed a deal with SpaceX to launch a crew of four private passengers atop a Falcon 9 rocket aboard the Crew Dragon spacecraft on a voyage to the International Space Station (ISS). The mission, known as AX-1, will be the first fully-commercial private passenger mission in history, scheduled to launch during the second half of 2021. “This history-making flight will represent a watershed moment in the march toward universal and routine access to space,” Axiom Chief Executive Officer Michael Suffredini said in a press release earlier this year. “This will be just the first of many missions to ISS to be completely crewed and managed by Axiom Space – a first for a commercial entity. Procuring the transportation marks significant progress toward that goal, and we’re glad to be working with SpaceX in this effort.”
The private passengers will be lead by former NASA Astronaut Michael Lopez-Alegria, who has been to space four times; he will be Axiom’s AX-1 Mission Commander. After SpaceX successfully launched four Crew-1 astronauts to the space station this week, Lopez-Alegria shared his excitement to soon ride aboard SpaceX spacecraft. “God willin’ and the creek don’t rise, I’ll be leading the AX-1 crew on the first purely commercial orbital mission in history a little over a year from now — on this very SpaceX Crew Dragon capsule. It’s gonna be a Blast!” Lopez-Alegria said.
Nov 19, 2020
Researchers describe fundamental processes behind movement of magnetic particles
Posted by Genevieve Klien in categories: biotech/medical, nanotechnology
The motion of magnetic particles as they pass through a magnetic field is called magnetophoresis. Until now, not much was known about the factors influencing these particles and their movement. Now, researchers from the University of Illinois Chicago describe several fundamental processes associated with the motion of magnetic particles through fluids as they are pulled by a magnetic field.
Their findings are reported in the journal Proceedings of the National Academy of Sciences.
Understanding more about the motion of magnetic particles as they pass through a magnetic field has numerous applications, including drug delivery, biosensors, molecular imaging, and catalysis. For example, magnetic nanoparticles loaded with drugs can be delivered to discrete spots in the body after they are injected into the bloodstream or cerebrospinal fluid using magnets. This process currently is used in some forms of chemotherapy for the treatment of cancer.
Nov 19, 2020
Small finlets on owl feathers point the way to less aircraft noise
Posted by Genevieve Klien in categories: engineering, sustainability, transportation
A recent research study conducted by City, University of London’s Professor Christoph Bruecker and his team has revealed how micro-structured finlets on owl feathers enable silent flight and may show the way forward in reducing aircraft noise in future.
Professor bruecker is city’s royal academy of engineering research chair in nature-inspired sensing and flow control for sustainable transport and sir richard olver BAE systems chair for aeronautical engineering.
His team have published their discoveries in the Institute of Physics journal, Bioinspiration and Biomimetics in a paper titled ‘Flow turning effect and laminar control by the 3D curvature of leading edge serrations from owl wing.’
Just finished up an interview for “Career Buzz,” a radio progam airing on Toronto based CIUT next Wednesday at 11am. The topic initially focused around jobs in the Canadian aerospace industry, but after the host noted that air travel was down 94% over the last year because of covid and no one sane is going to buy any new planes for a very, very long time, the focus changed to Covid and how that’s affecting the industry. I’ve been invited back next month to talk more about Covid. It’s the big story of our generation…
Wednesdays, 11:00am-12:00pm
Since 2006, we’ve broadcast unrehearsed and informative conversations featuring extraordinary career stories of ordinary people, and insights from future-of-work thought leaders including Dragon’s Den star Arlene Dickinson, Canada’s career guru Barbara Moses, National Geographic explorer-in-residence Wade Davis, and career scholars Norm Amundson, John Krumboltz and many more.
Nov 18, 2020
Synthetic biology crucial to human missions to Mars
Posted by Lola Heavey in categories: bioengineering, biological, chemistry, genetics, space travel
In Project Apollo, life support was based on carrying pretty much everything that astronauts needed from launch to splashdown. That meant all of the food, air, and fuel. Fuel in particular took up most of the mass that was launched. The enormous three-stage Saturn-V rocket was basically a gigantic container for fuel, and even the Apollo spacecraft that the Saturn carried into space was mostly fuel, because fuel was needed also to return from the Moon. If NASA’s new Orion spacecraft takes astronauts back to the Moon, they’ll also use massive amounts of fuel going back and forth; and the same is true if they journey to a near-Earth asteroid. However, once a lunar base is set up, astronauts will be able use microorganisms carried from Earth to process lunar rock into fuel, along with oxygen. The latter is needed not just for breathing, but also in rocket engines where it mixes with the fuel.
Currently, there are microorganisms available naturally that draw energy from rock and in the process release chemical products that can be used as fuel. However, as with agricultural plants like corn and soy, modifying such organisms can potentially make a biologically-based lunar rock processing much more efficient. Synthetic biology refers to engineering organisms to pump out specific products under specific conditions. For spaceflight applications, organisms can be engineered specifically to live on the Moon, or for that matter on an asteroid, or on Mars, and to synthesize the consumables that humans will need in those environments.
In the case of Mars, a major resource that can be processed by synthetic biology is the atmosphere. While the Martian air is extremely thin, it can be concentrated in a biological reactor. The principal component of the Martian air is carbon dioxide, which can be turned into oxygen, food, and rocket fuel by a variety of organisms that are native to Earth. As with the Moon rocks, however, genetic techniques can make targeted changes to organisms’ capabilities to allow them to do more than simply survive on Mars. They could be made to thrive there.
