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The Daily Cosmos or Interesting Facts about the Universe

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The Daily Cosmos or Interesting Facts about the Universe

Cosmology
Astrophysics
Astronomy

Location: #science
Members: 58
Latest Activity: 18 hours ago

 

Cosmology - Astrophysics - Astronomy

 

Hubble Wallpaper - Awesome Hubble Images

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Comment by Mrs.B 18 hours ago

More info all the time.

Comment by Doone has Fremdschämen 18 hours ago

Large, strangely dim galaxy found lurking on far side of Milky Way


Circling our galaxy is a stealthy giant. Astronomers have discovered a dwarf galaxy, called Antlia 2, that is one-third the size of the Milky Way itself. As big as the Large Magellanic Cloud, the galaxy’s largest companion, Antlia 2 eluded detection until now because it is 10,000 times fainter. Such a strange beast challenges models of galaxy formation and dark matter, the unseen stuff that helps pull galaxies together.

“It’s a very odd object and kind of exciting because we don’t know yet how to interpret all of its properties,” says Andrey Kravtsov of The University of Chicago in Illinois, who was not involved in the work.

The galaxy was discovered with data from the European Space Agency’s Gaia satellite, a space telescope measuring the motions and properties of more than 1 billion stars in and around the Milky Way. Gabriel Torrealba, an astronomy postdoc at the Academia Sinica in Taipei, decided to sift the data for RR Lyrae stars. These old stars, often found in dwarf galaxies, shine with a throbbing blue light that pulses at a rate signaling their inherent brightness, allowing researchers to pin down their distance.

Comment by Doone has Fremdschämen 23 hours ago

How cool is that! updated his interactive online tool that allows you to build exaggerated relief maps of the whole world. Here is the San Francisco Bay Area. Tons of fun to play with! Source:

Comment by Mrs.B yesterday

Good view.

Comment by Stephen yesterday

OSIRIS-REx Sees Bennu from 'All Sides' 

This set of images shows the asteroid Bennu rotating for one full revolution. Over a four-hour and 11-minute period on Nov. 2, the PolyCam camera on NASA’s OSIRIS-REx spacecraft acquired a 2.5-millisecond image for every 10 degrees of the asteroid’s rotation. At the time of imaging, Bennu was approximately 122 miles (197 km) from the spacecraft, and appeared approximately 200 pixels wide in PolyCam’s frame.

Comment by Chris on November 8, 2018 at 10:05am

Howard Hughes  Bra designer.

FYI. and background information.

Comment by Chris on November 8, 2018 at 9:47am

Bra company made first space suits.

Neil Armstrong’s Spacesuit Was Made by a Bra Manufacturer.

",,,

The Apollo suits were blends of cutting-edge technology and Old World craftsmanship. Each suit was hand-built by seamstresses who had to be extraordinarily precise; a stitching error as small as 1/32 inch could mean the difference between a space-worthy suit and a reject. While most of the suit’s materials existed long before the Moon program, one was invented specifically for the job. After a spacecraft fire killed three Apollo astronauts during a ground test in 1967, NASA dictated the suits had to withstand temperatures of over 1,000 degrees Fahrenheit. The solution was a state-of-the-art fabric called Beta cloth, made of Teflon-coated glass microfibers, used for the suit’s outermost layer.

For the suit’s creator, the International Latex Corporation in Dover, Delaware, the toughest challenge was to contain the pressure necessary to support life (about 3.75 pounds per square inch of pure oxygen), while maintaining enough flexibility to afford freedom of motion. A division of the company that manufactured Playtex bras and girdles, ILC had engineers who understood a thing or two about rubber garments. They invented a bellowslike joint called a convolute out of neoprene reinforced with nylon tricot that allowed an astronaut to bend at the shoulders, elbows, knees, hips and ankles with relatively little effort. Steel aircraft cables were used throughout the suit to absorb tension forces and help maintain its shape under pressure.

For Armstrong, that meant he could move freely enough to collect priceless samples of lunar rocks and dust, help Buzz Aldrin deploy a pair of scientific experiments and, late in the Moonwalk, take an unplanned run to photograph a crater some 200 feet from the lunar lander—all without having to think about the fact that a few layers of material separated him from the vacuum of space. A quarter century later, in 1994, Armstrong sent a letter of appreciation for his wearable spacecraft to NASA. “It turned out to be one of the most widely photographed spacecraft in history,” Armstrong wrote. “That was no doubt due to the fact that it was so photogenic.” With typical self-deprecating humor, he added, “Equally responsible for its success was its characteristic of hiding from view its ugly occupant.”


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Comment by Tom Sarbeck on November 8, 2018 at 9:21am

Nikola Tesla on Einstein’s Relativity:

Einstein’s relativity work is a magnificent mathematical garb which fascinates, dazzles, and makes people blind to the underlying errors. The theory is like a begger clothed in purple whom ignorant people take for a king; its exponents are brilliant men but they are metaphysicists rather than scientists.

Source: Peter Meissnitzer at thunderbolts dot info. [ Tesla to NYT in 1935. TLS. Found in the search “Nikola Tesla on relativity” ]

Comment by Stephen on November 7, 2018 at 9:36pm

And of course they work just look at the Soyuz escape system just a weeks ago 

Comment by Mrs.B on November 7, 2018 at 8:16pm

Good pic.

 
 
 

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