In this episode of Cosmic Queries, Neil will discuss topics ranging from alien plant life, to colonizing Mars, to whether velocity could be considered a dimension. You'll find out if the constellations would look different when seen from Saturn, whether there's a north pole to our universe, and why astronomers got the Milky Way's north pole wrong in the first place.
Discover why a stable black hole can't exist inside a star, and how the expansion of our Sun will affect the Earth. You'll learn how scientists knew to leave gaps in the periodic table of the elements, and why the moon is spiraling away from the Earth at 5 inches a year. Neil speculates on what the bright spot on the dwarf planet Ceres might be, whether we'll explore Jupiter's moon Europa in our lifetimes, and if we'll find life in its subsurface ocean. You'll also hear how NASA inventions led to grooved highway pavement and safer, cheaper LASIK surgery. On the lighter side, Neil and Chuck talk about the Ship of the Imagination from COSMOS: A Spacetime Odyssey to YouTube's famous “Double Rainbow Guy.
Elton John shares his photography collection, Tracey Emin gets into bed with William Blake and David Shrigley gives everyone a big thumb's-up
Neon might once have been considered a quintessentially American medium but the British artists who have worked with it are numerous. Martin Creed, Tracey Emin, Cerith Wyn Evans and Eddie Peake are just some of the homebred talents to feature alongside international names in this major survey of neon art in, where else, Blackpool. Home to the world-famous Illuminations, first switched on in September 1879, the city has played a central role in the UK history of neon, as the Grundy seeks to prove with an exhibition that includes rare 1930s designs for the biggest free light show on earth.
• 1 September to 7 January 2017, Grundy Art Gallery, Blackpool.
Polish poster by Bronislaw Zelek for FAR FROM THE MADDING CROWD (John Schlesinger, UK, 1967) and the Spanish poster for YOU WILL MEET A TALL DARK STRANGER (Woody Allen, USA, 2010).
US teaser one sheet for LA LA LAND (Damien Chazelle, USA, 2016)
Designer: LA (appropriately enough)
Poster source: IMPAwards
Last October Smithsonian Folkways released “The Brothers Nazaroff: The Happy Prince,” a boisterous, high-energy tribute to cult Yiddish troubadour Nathan “Prince” Nazaroff, who recorded the mysterious Folkways 10-inch record Jewish Freilach Songs in 1954. International klezmer supergroup The Brothers Nazaroff, composed of Daniel Kahn, Psoy Korolenko, Michael Alpert, Jake Shulman-Ment, Bob Cohen, and Hampus Melin, breathe new life into the discordant, obscure, jubilant legacy of their Happy Prince.
This animation by Ben Katchor gives a preview of The Brothers Nazaroff's raucous reinterpretation of The Happy Prince's song “Ich A Mazeldicker Yid (Oh! Am I a ‘Mazeldicker' Jew!).”
The post Animated Music Video: “Ich A Mazeldicker Yid” by The Brothers Nazaroff appeared first on Smithsonian Insider.
This artist's impression shows the Milky Way as it may have appeared 6 million years ago during a “quasar” phase of activity. A wispy orange bubble extends from the galactic center out to a radius of about 20,000 light-years. Outside of that bubble, a pervasive “fog” of million-degree gas might account for the galaxy's missing matter of 130 billion solar masses. (Image by Mark A. Garlick/CfA)
The center of the Milky Way galaxy is currently a quiet place where a supermassive black hole slumbers, only occasionally slurping small sips of hydrogen gas. But it wasn't always this way. A new study shows that 6 million years ago, when the first human ancestors known as hominins walked the Earth, our galaxy's core blazed forth furiously. The evidence for this active phase came from a search for the galaxy's missing mass.
Measurements show that the Milky Way galaxy weighs about 1-2 trillion times as much as our Sun. About five-sixths of that is in the form of invisible and mysterious dark matter. The remaining one-sixth of our galaxy's heft, or 150-300 billion solar masses, is normal matter. However, if you count up all the stars, gas and dust we can see, you only find about 65 billion solar masses. The rest of the normal matter stuff made of neutrons, protons, and electrons seems to be missing.
“We played a cosmic game of hide-and-seek. And we asked ourselves, where could the missing mass be hiding?” says lead author Fabrizio Nicastro, a research associate at the Harvard-Smithsonian Center for Astrophysics (CfA) and astrophysicist at the Italian National Institute of Astrophysics (INAF).
“We analyzed archival X-ray observations from the XMM-Newton spacecraft and found that the missing mass is in the form of a million-degree gaseous fog permeating our galaxy. That fog absorbs X-rays from more distant background sources,” Nicastro continues.
The astronomers used the amount of absorption to calculate how much normal matter was there, and how it was distributed. They applied computer models but learned that they couldn't match the observations with a smooth, uniform distribution of gas. Instead, they found that there is a “bubble” in the center of our galaxy that extends two-thirds of the way to Earth.
Clearing out that bubble required a tremendous amount of energy. That energy, the authors surmise, came from the feeding black hole. While some infalling gas was swallowed by the black hole, other gas was pumped out at speeds of 2 million miles per hour (1,000 km/sec).
Six million years later, the shock wave created by that phase of activity has crossed 20,000 light-years of space. Meanwhile, the black hole has run out of nearby food and gone into hibernation.
This timeline is corroborated by the presence of 6-million-year-old stars near the galactic center. Those stars formed from some of the same material that once flowed toward the black hole.
“The different lines of evidence all tie together very well,” says Smithsonian co-author Martin Elvis (CfA). “This active phase lasted for 4 to 8 million years, which is reasonable for a quasar.”
The observations and associated computer models also show that the hot, million-degree gas can account for up to 130 billion solar masses of material. Thus, it just might explain where all of the galaxy's missing matter was hiding: it was too hot to be seen.
More answers may come from the proposed next-generation space mission known as X-ray Surveyor. It would be able to map out the bubble by observing fainter sources, and see finer detail to tease out more information about the elusive missing mass. The European Space Agency's Athena X-ray Observatory, planned for launch in 2028, offers similar promise.
These results have been accepted for publication in The Astrophysical Journal and are available online.
The post The Milky Way's blowout bash 6 million years ago! appeared first on Smithsonian Insider.
A giant killer hornet war is waged between two colonies, and the resources, territories, and survival of a new generation are at stake. Watch the battle unfold as these huge hornets risk their lives for their kingdoms. From: KILLER HORNETS
The post Smithsonian Channel: Killer hornet war appeared first on Smithsonian Insider.
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Think of it as a gift within a gift. Some beneficial gut bacteria contain viruses called "bacteriophages." And some of these phages now have been associated with good intestinal health in humans.
Foxy Belle posted a photo:
This monarch flew around our heads in the backyard and then landed on this wildflower. It stayed still and was very patient as I took a close up.
I am sooo pleased to see another of these gorgeous butterflies. I had not seen any in years and now 2 within 2 days. I just love these beauties. I once did a huge painting of a wing in art class in high school. I dedicate a bullentin board to them in my classroom and have paper ones hung about.