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Smithsonian astronomers have just discovered a rare example of a galaxy that appears to have a pair of giant black holes. Now they are trying to determine if those black holes are partners tied together by gravity, or if one of the two has been kicked out in a cosmic breakup.

The post Double Black-Hole Mystery: Dance Partners or Breakup Survivors? appeared first on Smithsonian Insider.

Astronomers using NASA's Chandra X-ray Observatory have found evidence of the youngest black hole known to exist in our cosmic neighborhood. The 30-year-old object is a remnant of SN 1979C, a supernova in the galaxy M100 approximately 50 million light years from Earth.

The post Chandra X-ray Observatory finds youngest nearby black hole appeared first on Smithsonian Insider.

According to new research by Nick Stone and Avi Loeb (Harvard-Smithsonian Center for Astrophysics), upcoming sky surveys might offer astronomers a way to catch a gorging black hole "in the act."

The post Astronomers seek monster black hole gorging on a buffet of stars appeared first on Smithsonian Insider.

Using the deepest X-ray image ever taken, astronomers found the first direct evidence that massive black holes were common in the early universe. This discovery from NASA's Chandra X-ray Observatory shows that very young black holes grew more aggressively than previously thought, in tandem with the growth of their host galaxies.

The post Chandra X-Ray Observatory finds massive black holes common in early universe appeared first on Smithsonian Insider.

Astronomers using NASA's Chandra X-ray Observatory discovered the first pair of supermassive black holes in a spiral galaxy similar to the Milky Way. Approximately 160 million light years from Earth, the pair is the nearest known such phenomenon.

The post Newly discovered supermassive black holes are just 160 million light years from Earth appeared first on Smithsonian Insider.

Astronomers are confident the Cygnus X-1 system contains a black hole, and with these latest studies they have remarkably precise values of its mass, spin, and distance from Earth.

The post New details on birth of black hole Cygnus X-1 revealed by Chandra X-ray Observatory appeared first on Smithsonian Insider.

Astronomers using NASA's Hubble Space Telescope have found a cluster of young, blue stars encircling the first intermediate-mass black hole ever discovered. The presence of the star cluster suggests that the black hole was once at the core of a now-disintegrated dwarf galaxy.

The post Black hole came from a shredded galaxy appeared first on Smithsonian Insider.

A new study provides a possible explanation for the mysterious flares. The suggestion is that there is a cloud around Sgr A* containing hundreds of trillions of asteroids and comets, which have been stripped from their parent stars.

The post X-ray flares observed by Chandra are asteroids being torn to pieces in a black hole appeared first on Smithsonian Insider.

An international team of scientists has discovered an ‘ordinary’ black hole in the galaxy Centaurus A. This is the first time that a normal-size black hole has been detected away from the immediate vicinity of our own Galaxy.

The post “Ordinary” black hole discovered in a galaxy 12-million-light-years away appeared first on Smithsonian Insider.

A new study by astrophysicists at the University of Utah and the Smithsonian Astrophysical Observatory in Cambridge, Mass., has found a new explanation for the growth of supermassive black holes: they repeatedly capture and swallow single stars from pairs of stars that get too close.

The post Steady diet of binary star partners makes black holes grow “supermassive” appeared first on Smithsonian Insider.

Smithsonian astronomers have joined their colleagues from other observatories in a daring new venture: to photograph the giant black hole at the heart of our Milky Way galaxy.

The post Smithsonian astronomers and colleagues to photograph black hole at our galaxy’s heart appeared first on Smithsonian Insider.

An extraordinary outburst produced by a black hole in a nearby galaxy has provided direct evidence for a population of old, volatile stellar black holes.

The post Astronomers witness black hole outburst in Spiral Galaxy M83 appeared first on Smithsonian Insider.

Supermassive black holes snack infrequently, making the recent discovery of a black hole in the act of feeding all the more exciting to astronomers.

The post Scientists catch black hole in a feeding frenzy appeared first on Smithsonian Insider.

Astronomers have found strong evidence that a massive black hole is being ejected from its host galaxy at a speed of several million miles per hour.

The post Giant black hole kicked out of home galaxy appeared first on Smithsonian Insider.

A new study of Chandra data has revealed two nearby galaxies whose supermassive black holes are growing faster than the galaxies themselves.

The post Black hole growth found to be out of synch appeared first on Smithsonian Insider.

Imagine a sphere more than 2 million miles across – eight times the distance from Earth to the Moon – spinning so fast that its […]

The post Supermassive black hole spins super fast appeared first on Smithsonian Insider.

This composite image of a galaxy illustrates how the intense gravity of a super massive black hole can be tapped to generate immense power. The image […]

The post Black-hole powered jets plow into galaxy appeared first on Smithsonian Insider.

Using data from NASA’s Chandra X-ray Observatory, astronomers have discovered an unprecedented bonanza of black holes in the Andromeda Galaxy, one of the nearest galaxies […]

The post Chandra X-ray Observatory turns up black hole bonanza in galaxy next door appeared first on Smithsonian Insider.

Every massive galaxy has a black hole at its center, and the heftier the galaxy, the bigger its black hole. But why are the two […]

The post Dark matter guides growth of supermassive black holes appeared first on Smithsonian Insider.

Researchers have discovered a black hole that grew much more quickly than its host galaxy. The discovery calls into question previous assumptions on the development […]

The post A Precocious Black Hole appeared first on Smithsonian Insider.

Most people think of black holes as giant vacuum cleaners sucking in everything that gets too close. But the supermassive black holes at the centers […]

The post Event Horizon Telescope Reveals Magnetic Fields at Milky Way’s Central Black Hole appeared first on Smithsonian Insider.

On September 14, 2015, the Laser Interferometer Gravitational-wave Observatory (LIGO) detected gravitational waves from the merger of two black holes 29 and 36 times the […]

The post Ligo’s Twin Black Holes Might Have Been Born Inside a Single Star appeared first on Smithsonian Insider.

Every few thousand years, an unlucky star wanders too close to the black hole at the center of the Milky Way. The black hole’s powerful […]

The post Our Galaxy’s Black Hole is Spewing Planet-size “Spitballs” appeared first on Smithsonian Insider.

AUSTIN, Texas — Astronomers at The University of Texas at Austin and Harvard University have put a basic principle of black holes to the test, […]

The post Do Stars Fall Quietly into Black Holes? appeared first on Smithsonian Insider.

The center of our Galaxy has been intensely studied for many years, but it still harbors surprises for scientists. A snake-like structure lurking near our […]

The post Cosmic filament probes our galaxy’s giant black hole appeared first on Smithsonian Insider.

A team of astrophysicists and planetary scientists has predicted that Neptune-like planets located near the center of the Milky Way galaxy have been transformed into […]

The post Black hole blasts may transform “Mini-Neptunes” into rocky worlds appeared first on Smithsonian Insider.

Black holes sound wildly complicated. After all, there are all sorts of bizarre things going on: intense gravity, the warping of the fabric of space, the distortion of time itself. But when it comes to describing black holes, it comes down to just two numbers: the mass of the black hole and its spin. That’s right. Everything you physically need to describe a black hole is found in just these two numbers.

The post Black Holes, just two numbers is all you need… appeared first on Smithsonian Insider.

Silent black & white archival film clip from "Japan: Promotional and Theatrical Footage, ca. 1927". The full film, which is 17 minutes long, includes segments from what are believed to be a theatrical film, a promotional film and, possibly, amateur film - all of unknown origin.

The post Geisha Hairstyling, ca. 1927, a silent black & white archival film clip from the Smithsonian’s Human Studies Film Archives appeared first on Smithsonian Insider.

Black lung disease cases in coal miners have been increasing since 2000 for uncertain reasons.

; Credit: Michelle Lanz/KPCC

This is my Earth Day homage, with the green cotton poplin coat and the nifty closures. Couture and hardware experts! Can I beseech you to tell us what this type of closure is called? The round metal gizmo is a grommet, but what do you call the short bar at the end of a chain that goes through the grommet to secure it?

I hope there’s some fanciful medieval word for it, because in my fevered romantic brain, it has the feel of the kind of clothing closure that might have been used for a coat of mail or doublet or surcoat or cotehardie or any of a number of divinely archaic phrases for wardrobe items.
 
Can a print still be spring-y when it’s on a black background, like this one? I’ve heard that there’s a new vogue for prints in tshirts. I would welcome that, because I’m weary of the myriad dreary fan-girl T-shirts, and the clever or hip ones meant to show that you are unique, along with the other two-million people wearing the identical shirt. I’ve seen enough devil’s horns and skulls and snakes to fill the Book of Revelations, so let’s just move along, shall we?
 
These shoes I wear, but rarely. Otherwise they doze quietly in their red flannel shoe bag: my green patent-leather Louboutins. I’d coveted them since seeing them new in a shop in London, when they cost about as much as my plane ticket. I lay in wait for years for someone to put them up on eBay.

The name of the style is “Iowa.” Did the person in charge of naming styles for M. Louboutin know that Iowa is a flat agricultural state smack dab in the middle of the United States? Or perhaps he or she simply liked the esthetics of a word with three vowels and a consonant. What leads me to suspect the latter is the fact that Paris has a wanna-be TexMex cafe named “Indiana.”

When I went there, it was chockablock with images of Indians, who have nothing to do with TexMex food and are not much associated these days with the state of Indiana.
 
For the life of me, I can’t remember where I got the bracelet, but the blue-green-colored “art glass” cabochons practically glow, like that magnificent iridescence that you find in nature. It goes by the fine name ‘’goniochromism,’’ which you should really start throwing around more in general conversation. It’s the purview of butterfly wings and peacock feathers and  scarabs and abalone shells, of course, and of that changeable taffets which seems to have a recrudescence every few years on the racks of prom gowns, and probably should not.

This content is from Southern California Public Radio. View the original story at SCPR.org.

The number of overexploited or collapsed fish stocks in the Mediterranean Sea has been increasing at a rate of approximately 38 every 10 years between 1970 and 2010, a new study has shown. In the Black Sea, the equivalent figure is 13 stocks per decade, the researchers found. The study’s authors augmented traditional methods of stock assessments with a variety of other data sources on multiple fish species to give a more accurate overview of these marine ecosystems. These results should be used to improve conservation and management, they recommend.

DEF CON and Black Hat announced today that their upcoming security conferences in Las Vegas this summer will no longer be in-person and are instead moving to an all-virtual event. [...]

International rail vehicle construction company, Stadler, disclosed that it was the victim of a cyberattack which might have also allowed the attackers to steal company and employee data. [...]

The damaging effects of sea-level rise on Black Sea beaches have been estimated in a new study. Diminishing river sediment supply caused by river dams is also an erosion threat. These new results suggest that erosion could cause over 90% of these beaches to retreat by at least 20% of their width. A publicly available database created by the researchers could be useful for developing coastal protection schemes.

Researchers have trawled coastal areas of the Eastern Mediterranean and Black Sea for waste and found up to 1211 items of litter per km². Plastic bags and bottles were some of the most commonly found items. They present the results in a recent study, which they say supports Marine Strategy Framework Directive (MSFD) implementation, as well as efforts to discourage plastic carrier bag use.

The impacts of climate change in the Black Sea region are likely to affect agriculture in Ukraine, Romania, Moldova, Hungary, Bulgaria and Turkey, new research suggests. The number of days of plant growth was reduced in these countries as a result of reduced precipitation, increased temperatures and low capacity for irrigation to supplement water needs. A strong legal framework is necessary to deal with conflicting future demands for water, say the researchers.

Reliable data regarding marine debris pollution in the Black Sea are lacking. This study provides the first account of the abundance and types of litter floating in the north-western part of the Sea. This information will help to develop effective solutions for marine litter in the region and therefore to achieve the EU objective of ‘Good Environmental Status’ by 2020.

The black locust tree can be economically valuable and offer certain environmental benefits, but its dominant and invasive nature in Europe can have an adverse impact on biodiversity. A recent study, which presents an overview of this species’ ecological and socio-economic impacts in Central Europe, recommends tolerating the tree in some areas and eradicating it in others, in order to balance its co-existence with people and nature.

A recent assessment suggests that reducing black carbon emissions, produced by burning carbon-based materials, would prevent millions of premature deaths in developing countries as well as helping meet climate change mitigation targets.

New research has recorded high levels of airborne aerosol black carbon (BC) in Lithuania during two periods in 2008 and 2009. Further investigation indicated this is from smoke produced by wildfires in Ukraine and southwest Russia, which then travels northwards.

Man-made pollutants may be responsible for the expansion of the tropics in the northern hemisphere, according to recent research. Black carbon aerosols and tropospheric ozone, formed from human activities, are heating the atmosphere and shifting major atmospheric circulation patterns further north, which could create drier conditions in the subtropics.