the-telescope-times: Observations hint at a new recipe for…

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the-telescope-times:

Observations hint at a new recipe for giant black holes

Here’s a thought experiment that has unsettled astrophysicists: Start the clock at the beginning of time. Form a black hole in the usual way, through the collapse of a massive star. To make it grow, force-feed it with gas, which will resist being devoured by heating up and dispersing as it nears the black hole’s maw. Try to grow a black hole fast enough to explain the ones that existed in the real universe when it was just a billion years old: monsters a billion times the mass of the sun that drive the powerful beacons called quasars.

“It’s very difficult,” says Amy Reines, an observational astronomer at the National Optical Astronomy Observatory in Tucson, Arizona. Astronomer Nico Cappelluti of Yale University is more definitive. “There is no way to grow such a massive black hole from an ordinary stellar black hole,” he says. But he and others see hints of a faster route involving primordial gas clouds, as they described last week at the winter meeting of the American Astronomical Society in Grapevine, Texas.

Some theorists had already suggested that, instead of coming from collapsed stars, the behemoth black holes in the early universe could have gotten a head start. Huge gas clouds left by the big bang might have quickly shrunk under their own gravity and, instead of splintering into many stars, condensed into black hole seeds 10 thousand to 100 thousand times heavier than the sun. Those seeds would have grown further, to billions of solar masses, by sucking in stars and gas. But although a few candidates for such objects have been timidly proposed, these “direct collapse” black holes would be hard to spot and harder to confirm with current technology.

Read more ~ ScienceMag.org

Image: On its way to collapsing directly into a black hole, primordial gas pools in areas of higher gravity in this supercomputer simulation of the newborn universe.
    Credit: Aaron Smith/TACC/UT-Austin  

superheroesincolor: Hidden Figures (2016) directed by Theodore…

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superheroesincolor:

Hidden Figures (2016) directed by Theodore Melfi  

“Before John Glenn orbited the earth, or Neil Armstrong walked on the moon, a group of dedicated female mathematicians known as “human computers” used pencils, slide rules and adding machines to calculate the numbers that would launch rockets, and astronauts, into space.

Among these problem-solvers were a group of exceptionally talented African American women, some of the brightest minds of their generation…” 

Poster design by Gravillis Inc.

Get the book here

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all-thats-interesting: High-Speed Photos Of A Nuclear…

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all-thats-interesting:

High-Speed Photos Of A Nuclear Explosion

During Operation Tumbler-Snapper, these photos were taken using an ultra-high speed rapatronic camera. They are intended to display the amorphous, unusual waves emanating from a nuclear bomb.

Source: Operation Tumbler-Snapper

Saturday, January 13, 2018 – 6th Annual Black Comic Book Festival Brunch

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It’s that time again, Blerds, time to check out the Annual Black Comic Book Festival at the Schomburg.

This time, we’re going to do brunch at Harlem Tavern before we check out the show, and then walk over together.

RSVP HERE!

We’re going to have to make reservations, so I have to ask you to be extra current with your RSVP’s leading up to the date. It’s okay to change your mind, just make sure you change your RSVP well in ADVANCE. Also, make sure you get there ON TIME, because they won’t seat us until we’re all there. I also highly recommend you bring cash so you don’t have to figure out credit card nonsense, that’s what I’m gonna do!

See you there!

naturallynina: It’s a fact that everything tastes better in a…

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naturallynina:

It’s a fact that everything tastes better in a jar😉 inspired by @mrmrsvegan to put my salad in a jar too, so I made this Asian noodle salad with layers of spicy tofu mince, corn, cucumber, carrot, romaine, purple cabbage + a miso-ginger dressing. Flavour EXPLOSION I tell you👅💥💥
P.S. Would you believe me if I told you this salad was made entirely of leftovers?🙌🏼

IG: @naturally_nina_