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Smoke from several large fires burning on Portugal's Madeira Island were seen blowing over the Atlantic Ocean on Aug. 10 when NASA's Terra satellite passed overhead.
Madeira is an archipelago of four islands located off the northwest coast of Africa. They are an autonomous region of Portugal.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite captured this natural-color image at 8:25 a.m. EDT (12:05 UTC). Places where MODIS detected active fire are located in red.
Image Credit: NASA Goddard's Rapid Response Team, Jeff Schmaltz
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NASA Goddard Space Flight Center enables NASA's mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA's accomplishments by contributing compelling scientific knowledge to advance the Agency's mission.
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Space Researchers have added more evidence about the ongoing mystery of KIC 8462852, aka Tabby's Star. Benjamin Montet with the California Institute of Technology and Joshua Simon with Observatories of the Carnegie Institution have enhanced their study of the star by analyzing data from the Kepler space observatory over the past four years. They found that the star has been decreasing in brightness at an unprecedented rate.
The tale of Tabby's Star began in September of last year when Louisiana State University astronomer Tabetha Boyajian reported anomalies in the unusual light curve of star KIC 8462852—over the years 2009 to 2013, its light appeared to dip in ways that did not conform to what would be expected if it were due to a planet passing in front of it, temporarily blocking some of its light. Her paper led to observations, commentaries and theories from others in the space community, though no one was able to come up with a reasonable explanation for what she had found.
One researcher actually proposed that it might be due to alien activity. Then, earlier this year, Bradley Schaefer with Louisiana State University published results of his efforts studying photographic plates that had captured the star going back to the 19th century—he reported that the light from the star had dimmed 19 percent over just the past century. His report was not received warmly by all, as many suggested his data or approach was likely flawed.
But now, another team has found something similar. Montet and Simon studied images from the space-based Kepler observatory and found that light from Tabby's Star had decreased in brightness by approximately .34 percent a year for 1000 days starting in 2009, which was actually twice the rate that Schaefer had found. Even stranger, they found that over the next 200 days, the brightness of the star dimmed by another 2.5 percent before it finally leveled out.
Various scientists have offered possible explanations for the strange behavior of Tabby's star—from comet swarms to planetary remnants to the construction of a Dyson Sphere-like structure around the star to capture its energy by aliens—but so far, none of the theories has been able to take into account all of the odd observations.
That may change soon, however, as Boyajian, the astronomer who first noticed the star's strange behavior, ran a successful crowdsourcing campaign to pay for time at the Las Cumbres Observatory Global Telescope Network over the course of a year—this will give her a chance to catch the star in the act of blinking, allowing her to alert the rest of the astronomy community, which will presumably its sights on the star at once, and in so doing, perhaps solve the mystery.
Using data from NASA's Kepler and Spitzer Space Telescopes, the artist's concept at the top of the page shows a star behind a shattered comet. Observations of the star KIC 8462852 by NASA's Kepler and Spitzer space telescopes suggest that its unusual light signals are likely from dusty comet fragments, which blocked the light of the star as they passed in front of it in 2011 and 2013. The comets are thought to be traveling around the star in a very long, eccentric orbit.
The Daily Galaxy via arxiv.org/abs/1608.01316
Image credit: NASA/JPL-Caltech
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The life of an astronaut in space consists of following many step-by-step procedures. We've all wished we had an extra arm when following the instructions to self-assembly furniture and for astronauts it is no different except their procedures, instructions and hardware are more complex as well as their lives often depending on following the instructions correctly.
ESA has developed a system that improves on the basic step-by-step procedures used on the International Space Station that are displayed on a computer. The current system requires constant floating back and forth from the computer to the workplace to check the next step, and mission control cannot easily follow progress.
The mobile procedure viewer or ‘mobiPV' is a wearable system that displays each step in a task, synchronises between the astronaut, ground control and third parties, automatically logs steps and communication and allows for video conferencing, note-taking and text chat.
In this image, ESA's Matthias Maurer is testing the system during a simulated space mission 20 m underwater off the coast of Florida, USA, during NASA's Extreme Environment Mission Operations (NEEMO).
The main part of the equipment is the smartphone and camera on a 3D-printed wrist-band. mobiPV can display the procedure on a separate tablet to see more information. Here Matthias has connected a third device for testing all three screens are synchronised.
Versions of mobiPV have been tested during NEEMO before and even in space during ESA astronaut Andreas Mogensen's ‘iriss' mission last year. This version, branded mobiPV++, uses a redesigned system and tests the device without a head-mounted display.
The NEEMO crew used mobiPV to run a new way of sampling water that shows promise for use on the International Space Station, called Aquapad. The procedure was displayed on the tablet with ground control following from the coast and the mobiPV team watching from ESTEC, ESA's technical heart in the Netherlands. The astronauts and NEEMO crew were very positive with the results.
The mobiPV team is continuing to refine the system and hope to have a second test on the International Space Station with ESA astronaut Thomas Pesquet during his six-month Proxima mission starting later this year.
Credit: NASA
Are massive black holes hiding in the halos of galaxies, making up the majority of the universe's mysterious dark matter?Roughly 27% of the mass and energy in the observable universe is made up of “dark matter” — matter invisible to us, which is neither accounted for by observable baryonic matter nor dark energy. What makes up this dark matter? Among the many proposed candidates, one is massive compact halo objects, or MACHOs. MACHOs are hypothesized to be black holes that formed in the early universe and now hide in galactic halos. We can't detect light from these objects — but their mass adds to the gravitational pull of galaxies.
So far, MACHOs' prospects aren't looking great. They have not been detected in gravitational lensing surveys, ruling out MACHOs between 10-7 and 30 solar masses as the dominant component of dark matter in our galaxy. MACHOs over 100 solar masses have also been ruled out, due to the existence of fragile wide halo binaries that would have been disrupted by the presence of such large black holes.
But what about MACHOs between 30 and 100 solar masses? In a new study, Timothy Brandt (NASA Sagan Postdoctoral Fellow at the Institute for Advanced Study, in Princeton, NJ) uses a recently discovered faint galaxy, Eridanus II, to place constraints on MACHOs in this mass range.
MACHO constraints from the survival of a star cluster in Eri II, assuming a cluster age of 3 Gyr (a lower bound; constraints increase when assuming an age of 12 Gyr). Eridanus II is an ultra-faint dwarf galaxy that lies roughly 1.2 million light-years away from us. This dim object is a satellite galaxy of the Milky Way, discovered as part of the Dark Energy Survey. One feature of Eri II is especially intriguing: a single bright star cluster nearly coincident with the galaxy's center.
What makes this cluster so interesting? Ultra-faint dwarf galaxies are dominated by their dark matter content — so if MACHOs make up most of the universe's dark matter content, Eri II should be full of them! But, Brandt points out, interactions between such MACHOs and Eri II's star cluster would result in dynamical heating of the cluster. This would cause the cluster to puff up in size.
Brandt calculates that the compact star cluster observed in Eri II couldn't exist if the galaxy's dark matter is made up of MACHOs of mass >15 solar masses.
This same argument can be extended to the entire stellar populations of dwarf galaxies. Due to dynamical heating, compact ultra-faint dwarfs would have much larger radii than we observe if their dark matter were in the form of MACHOs.
Brandt shows that the existence of these compact dwarfs rules out dark matter consisting entirely of MACHOs of mass >10 solar masses, closing the gap in our tests of the MACHO model for dark matter. Though black holes hiding in halos could still make up part of the universe's dark matter, an additional culprit will need to be identified to explain the bulk of it.
The Daily Galaxy via American Astronomical Society
Image credits: ESO and Caltech
Up to 200 Perseid meteors per hour could blaze across the northern hemisphere sky in the early hours of Friday morning. Here's what they are and how to see them
Night owls in the northern hemisphere could be in for a treat this Thursday night/Friday morning. The annual Perseid meteor shower reaches its peak on the night of 1112 August, and this year it is predicted to give double its usual rate of meteors.
Up to 200 shooting stars per hour could be seen under perfect conditions, according to Bill Cooke of Nasa's Meteoroid Environments Office in Huntsville, Alabama. The International Meteor Organization goes as far as wondering whether this week's spectacle is going to be “the best in years”. The optimism is being driven by two reasons.
Related: Perseid meteor shower in pictures
Continue reading...Research shows the solenodon evolved more than 70 million years ago in time to hang out with dinosaurs. But today these unique mammals face a barrage of threats including stray dogs, feral cats, invasive mongoose and deforestation.
If there was any justice in the animal kingdom any at all the solenodon would be as famous as the tiger. The solenodon is a rabbit-sized, shrew-like mammal that is only found on two Caribbean islands: Cuba and Hispaniola (the Dominican Republic and Haiti).
There are a whole slew of reasons why the solenodon's star should rise, including the facts that it's one of the only venomous mammals and David Attenborough really likes it. But, most of all, the solenodon should be famous because it somehow survived the asteroid collision that killed off the dinosaurs, not to mention the next 66 million years of other catastrophes, from Ice Ages to the rise of bipedal destroyers named Homo Sapiens.
It's truly remarkable that the solenodons survived this direct hit, whilst global ecosystems collapsed around them.
I cannot explain what I felt the first time I touched it.
Related: How humans are driving the sixth mass extinction
Continue reading...348
With over 138 million collection objects, 2.1 million library volumes, and 137,000 cubic feet of archives, the stories of how our collections have made their way to the Smithsonian are almost as varied as the collections themselves. From a tiny mosquito to a space shuttle, we've seen, and moved, it all. This is an ode to all the collectors and movers that have made the Smithsonian what it is today.
Due to China's political unrest in the 1920s-30s, the Freer Gallery's associate curator of archaeology, Carl Whiting Bishop, had to stop his excavations on archaeological sites in the Shanxi Province. Instead, he kept busy improving his Chinese and searching for artifacts to add the Freer's new building. One such addition was a headless stone Buddha purchased for 4,800 Mexican silver dollars that continues to tell stories today.
Buddha draped in robes portraying the Realms of Existence, Freer Gallery of Art, Purchase Charles Lang Freer Endowment, F1923.15.
In 1946 under the name Operation Crossroads, the U.S. government exploded two atomic bombs at the Bikini Atoll. Two Smithsonian scientists were assigned to the mission to evaluate the environmental impact of the atomic bombs. To assess the risk of radiation to humans, government employees placed several animals on ships near the island. The lone survivor, Pig 311, was found swimming for shore. In 1949, the Smithsonian was once again reminded of Operation Crossroads when Pig 311 was sent to the National Zoo to live out the rest of her days.
On November 8, 1958, one of the most famous gems in the world was mailed by U.S. Postal Service, in a plain brown paper package, for $145.29 to the Smithsonian's National Museum of Natural History: the Hope Diamond. An instant star, the 45.52 carat diamond has only left the Smithsonian four times since its arrival. And we love the story so much, the package became part of the collections of our National Postal Museum! (Bonus: learn more about the curse of the Hope Diamond from Smithsonian Provost Richard Kurin!)
Hope Diamond Presentation, by Unknown, November 10, 1958, Smithsonian Archives History Div, SIA2008-2293
On September 6, 1962, the Horatio Greenough statue of George Washington was moved from the Smithsonian's Castle to the partially complete Museum of History and Technology (now the National Museum of American History) in order to fit it inside before finishing the walls. While the distance between the two buildings is less than a half-mile, it took a lot of workso much so that it remains there today!
Perhaps alarming to some visitors, the Smithsonian displayed rockets outside its Arts & Industries Building (1950s-1974) before our National Air and Space Museum (NASM) was built. The rockets came down in November 1974 and into the new museum, but many people have fond memories of this eye-catching attraction on the National Mall.
In 1887, our third Secretary Samuel Pierpont Langley declared that the Smithsonian “should act for the nation in the matter of Art.” He retrieved some of the paintings our first Secretary and physicist, Joseph Henry (who was generally uninterested in building an art collection or museum), loaned to our neighbors, the Corcoran Gallery of Art and the Library of Congress. Langley also took interest in the art collection of Harriet Lane Johnston, niece of President James Buchanan, who died in 1903. Unfortunately, Johnston bequeathed the collection to the Corcoran, but a clause in her will stipulated that the collection would ultimately go to a national art gallery in the Nation's Capitol. Fortunately, the Corcoran turned it down and the collection became ours in 1906 to found the National Gallery of Art, now the Smithsonian American Art Museum
The Smithsonian's Anacostia Community Museum resides in Washington D.C.'s historic African American neighborhood, and seeks to enhance understanding of contemporary urban issues both locally and across the country. Their Community Documentation Initiative makes historic data and materials available to the community, and it includes a large trove of oral histories that bring this important neighborhood to life. There are descriptions for over 160 of them online.
Not satisfied with just one Renwick building (our Castle), we acquired our second in 1966. Originally built to show Europe that America was sophisticated enough to have art (and to house the art collection of native-Washingtonian and banker William Wilson Corcoran), it was the first building built in America expressly for the display of art. In the 1950s, as it became increasingly dilapidated, Congress recommended razing it. Despite calling it a “Victorian horror,” First Lady Jacqueline Kennedy launched a successful campaign to save it. In 1965, we asked to take over the building and Smithsonian American Art Gallery's Renwick Gallery of contemporary craft and decorative art was born.
Exterior of Renwick Gallery (19th c.), by Jarvis, J. F, c. 1880's, Smithsonian Archives History Div, SIA2011-1138 or SIA2008-2350 or 95-1169.
When Joseph Hirshhorn gave in to the persistent wooing of President Lyndon Johnston and his wife, Lady Bird, and Smithsonian's then Secretary, S. Dillon Ripley, he agreed to donate his collection in 1966 to found a national museum of contemporary art. The question then became how to move the over 12,000 artworks, including rather large sculptures, from his home in Greenwich, Connecticut, to the National Mall in Washington D.C.? One word: helicopter.
“King and Queen” Transported from the Hirshhorn Home, by Unknown, August 5, 1974, Smithsonian Archives History Div, SIA2011-2397.
Not to be outdone by the Hirshhorn sculpture helicopter drop, NASM's Udvar Hazy Center near Dulles Airport received the Space Shuttle Discovery in 2012 after it flew across the National Mall in Washington D.C., delighting government workers and tourists alike.
In a stupendous blurring of fact and fiction, the Smithsonian National Portrait Gallery's Director, Kim Sajet, played herself on the the Netflix show, House of Cards, to receive the “presidential” portrait of Francis J. Underwood into the collection. Painted by notable portrait artist, Jonathan Yeo, the painting is 6 feet by 6 feet and looms as large as Kevin Spacey's depiction of the conniving and sinister Underwood. To complete the storyline, Underwood himself is quoted in the press release as saying, “I'm pleased that the Smithsonian continues to prove itself as a worthwhile institution. I'm one step closer to convincing the rest of the country that I am the President.” It give me shivers.
How do you preserve African American history? One neighborhood at a time. The National Museum of African American History and Culture is visiting major cities around the country to help preserve family photographs and documents, military uniforms, quilts, and more with their Save Our African American Treasures program.
The Smithsonian Institution Archives keeps collections related to the history of the Smithsonian; its people, buildings, and events. One such collection is the papers of Warren M. Robbins, the man behind the Museum of African Art that was transferred to the Smithsonian by Congress in 1978 (now the National Museum of African Art). The 109 boxes of correspondence, photos, and memorabilia were picked up from a Capitol Hill row house in 2011, and are a testament to Robbins' passion for the African cultures that inspired him to found the museum.
How does one collect an iPad app written for iOS 4.3? It was a challenge fitting to our National Design Museum, the Cooper Hewitt, who in 2013 added its first piece of software code to the collection. Learn more about how they are using open source methodologies to preserve this alternative music browser, Planetary, for generations to come.
During the Iraq War, on September 17 and 18, 2004, American Indian members of the U.S. Army's 120th Engineer Combat Battalion held an Inter-Tribal Powwow at Al Taqaddum Air Base in Iraq. For the Powwow, the soldiers fashioned a ceremonial drum from a 55-gallon oil drum that was cut in half and covered with canvas from a sleeping cot. The drum was donated to our National Museum of American Indian by battalion members and their chaplain, Sergeant Debra K. Mooney (Choctaw), in 2005.
Drum, stand, and drumsticks, 2004. Made by 120th Engineer Combat Battalion in Al Fallujah; Al Anbar Province; Iraq. National Museum of the American Indian.
Finally, it's only fitting to end with a unique look at one of the Smithsonian's first treasures—our Castle. Though the Castle (which has housed exhibits, collections, and even our first Secretary!) was not completely finished until 1855, this photo was taken in the summer of 1850, while building was still underway. It is the earliest photo ever taken of the Smithsonian Castle, and the only photo of it under construction. And where did this rare photo come from? It was uncovered at a Washington D.C. Antique Photo and Postcard Show in the spring of 2015!
Lantern slide photograph on glass in wood mount, William Langenheim (1807-1874) and Frederick Langenheim (1809-1879) Philadelphia, 1850, Smithsonian Castle Collection, gift of Tom Rall, Arlington, Virginia.
Head over to the Smithsonian Transcription Center, where you can see firsthand how museums like the National Air and Space Museum and the Smithsonian American Art Museum were organized (plus a look at the development of the Hope Diamond exhibition), and help transcribe!
The post Seventeen Objects for 170 Years (Happy Birthday to us!) appeared first on Smithsonian Insider.
French grande for LA KERMESSE ROUGE aka THE SCARLET BAZAAR (Paul Mesnier, France, 1947)
Designer: Bernard Lancy
Poster source: Eat Brie
“Agnès Bonnardet leaves her parents to marry Claude Sironi, a painter who becomes famous but loses his talent. Meanwhile Agnes acquires a style of her own as an artist, which makes Claude jealous of his young wife. One day, he sends one of his own paintings to the Bazar de la Charité, a very trendy Paris department store, instead of one of his wife's works as ordered. Afraid of her being mad at him, he locks her up in the cloak room. A dreadful fire suddenly breaks out and sets the building ablaze.” IMDb
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And in the middle of my chaos , there was the sky...