black-hole
Latest
Scientists find the largest observed black hole to date
Astronomers aren't done with major black hole discoveries this year. The Max Planck Institute's Kianusch Mehrgan and colleagues have found the largest black hole ever observed at the center of Holm 15A, a galaxy about 700 million light-years away. It's more than twice as large as the previous observed record-setter at 40 billion times the mass of the Sun, and 10,000 times the mass of the black hole at the core of the Milky Way.
Russia launches X-ray telescope to find 'millions' of black holes
Russia is back in the business of space observation after losing control of a radio telescope a the start of 2019. The country has successfully launched Spektr-RG, an X-ray telescope co-developed with Germany's help. The vessel will take 100 days to reach its final destination of Lagrange Point 2, where it can conduct studies in stable conditions a million miles from Earth. When it gets there, though, it could significantly reshape human understanding of the universe.
X-rays help astronomers detect spinning black holes
It can be tricky to measure the spin of a black hole, particularly when it's hard to see them, but astronomers have pulled off just such a feat. They've gauged the spins of five supermassive black holes through a combination of data from the Chandra X-ray Observatory and gravitational lensing, or the use of gravity from celestial bodies to magnify very distant objects.
Scientists think some supermassive black holes didn’t start as stars
Despite the fact that scientists now have a real image of a supermassive black hole, they still have plenty of questions about the objects. Now, astrophysicists at Western University may have a new explanation for how some black holes formed. In research published in The Astrophysical Journal Letters today, Shantanu Basu and Arpan Das suggest that not all black holes emerge from star remnants. Their model may help scientists explain the formation of extremely massive black holes at a very early stage of the universe's development.
This is the first real picture of a black hole
Yes, it happened. After years of relying on computer-generated imagery, scientists using the Event Horizon Telescope have captured the first real image of a black hole. The snapshot of the supermassive black hole in the Messier 87 galaxy (about 55 million light years away) shows the "shadow" created as the event horizon bends and sucks in light. It also confirms that the black hole is truly huge, with a mass 6.5 billion times that of the Sun. As you might imagine, taking this picture was tricky -- it required worldwide collaboration that wasn't possible until recently.
Watch the first ever image of a black hole be livestreamed here
What does a black hole look like? Black, probably. And big. That sounds pretty vague, but as the gravitational forces of a black hole are so strong even light is overpowered by them, we've never had a comprehensive image of one before. Until now. Today, scientists from six cities around the world will unveil the first ever image of a black hole -- called Sagittarius A* -- and you can watch the historic announcement live online. (Update: the image has been released. Check it out here!)
Supermassive black hole dust is denser than we thought
The majority of galaxies have a supermassive black hole at their core. And, like our own Milky Way version, most of these black holes are relatively quiet. However, a minority of supermassive black holes are incredibly active, consuming dust, gas, and other matter at an extraordinary rate and emitting large amounts of energy. Scientists call these black holes active galactic nuclei. Generally, these active galactic nuclei all look the same, with a donut-shaped ring of dust, or a torus, surrounding the black hole. Now, scientists have determined that the tori around active supermassive black holes are actually much smaller than originally theorized. The study will be published in Monthly Notices of the Royal Astronomical Society.
Telescopes catch the aftermath of a black hole swallowing a star
Astronomers have observed a supermassive black hole swallowing a star 3.9 billion light years from Earth. The group used the European VLBI (Very Long Baseline Interferometry) network of telescopes, so big it's described as "Earth-sized", to observe the phenomenon.
NASA satellite shows black hole 'bulls-eye' eruption
NASA said its Swift satellite has imaged some of "the best dust-scattered X-ray ring images ever seen" from a black hole outburst. The V404 Cygni black hole and its companion star, about 8,000 light years away, are known to eject high-energy particles every 20 years or so. Swift's X-ray telescope detected the start of a new burst on June 15th, grabbing the attention of scientists at the University of Leicester, UK. On June 30th, they captured an eruption of concentric rings from the system that covered a portion of the sky about half the diameter of the moon.
Supercomputer gives most accurate picture yet of star formation
Scientists may finally have an answer to the question of why fewer stars than expected form out of interstellar material. So far, the best simulations have predicted that nearly all the matter in vast clouds of interstellar gases would eventually cool and become stars. However, only a small percentage actually does, so an international team led by CalTech has tried to create a more accurate model. They turned to a machine tailor-made for such simulations: the NSF-funded Stampede supercomputer. It turns out that star formation isn't just a local phenomenon; it's also affected by supernova explosions, radiation, stellar gases and even starlight.
Hyperspace Beacon: Easy money in SWTOR
Players have complained about Star Wars: The Old Republic's Legacy system's being a huge money sink. Why would I want to blow 275,000 credits to gain 30% extra XP? I'm not sure that the return is worth the investment unless you want to level multiple alts or level strictly through PvP, but I can understand BioWare's thinking regarding this sink. True, at the guild summit, we were told that the vast majority of level 50s have less than 500,000 credits in the bank, but I think you will agree that the money sink is needed when you see just how quickly money can be earned in SWTOR. I've been asked multiple times by other players, "What is the fastest way to make money?" Well, just as in any other MMO, there isn't any way to make money superfast from zero. But doing daily quests can certainly help you out with most money struggles. What if I told you that you can make nearly 200,000 credits in less than two hours? That 30% PvP XP increase doesn't seem so far away now, does it? Because any amount of credits can be instantly sent to any of your alts on the same server (including ones of the opposite faction), you can make this fast money on your level 50 and ship it quickly to the alt you wish to power level.
NASA's NuSTAR probe snaps first X-ray image of feeding black hole
It was Bret Easton Ellis who coined the phrase, "The better you look, the more you see," and it appears the folks down at NASA's Jet Propulsion Lab agree. In what's considered a "first," the agency's latest space-scouring probe, the Nuclear Spectroscopic Telescope Array, has turned on its X-ray vision to capture focused images of a black hole, dubbed Cygnus X-1, feeding on a nearby giant star. By tuning into these high-energy frequencies, scientists are getting a peek into a previously unseen side of the heavens at 100 times the sensitivity and 10 times the resolution of any preceding tech. The space agency plans to use the observatory's powerful sight to suss out other known areas of mass X-ray activity like 3C273, an active quasar located two billion light years away and even explore G21.5-0.9, the fallout from a supernova within the Milky Way galaxy. NuSTAR's first tour of galactic duty will span two year's time, during which it'll attempt to record imagery from "the most energetic objects in the universe, " as well as track the existence of black holes throughout the cosmos. Impressed? Yeah, us too.
NASA finds smallest ever black hole by its 'heartbeat' (video)
NASA's found the smallest black hole it's ever seen, thanks to the Rossi X-Ray Timing Explorer (RXTE) -- weighing around three times as much our own sun, it's near the bottom weight limit for the super-heavy phenomena. It was discovered by its unique "heartbeat", an X-Ray emission that takes place when gas sucked from a nearby star is swirled around the event horizon until friction causes it to super-heat. The disc then repeats the process every 40 seconds and when examined, looks just like the readout on an ECG machine. After the break we've got a video that talks you through it all and we won't mind if you start booming "Space... the final frontier..." halfway through -- we did too.
New Might & Magic Heroes VI trailer: 'Tears or blood?'
While we understand our bodies' natural inclination to produce both tears and blood during times of emotional duress and physical injury, we'd hate to have to be forced to choose between the two. If the question is more metaphorical however, as is the case in this new Might & Magic Heroes VI trailer, we think we'd have to go with blood, since they appear to be the side with glowing magma creatures. You know, now that we think about it, we'd always take blood over tears, especially in literal situations.
Giant body of water found in space, black hole claims it was just hydrating
Is that an intergalactic wave pool, or just a hungry, hungry quasar? Turns out it's a bit of both -- well, not the wave pool bit, but it's watery. A NASA-funded peep into the farthest reaches of the cosmos has uncovered this "feeding black hole" 12 billion light years away. APM 08279+5255, as this compacted mass of inescapable doom is affectionately known, has been gorging on water vapor and spewing out energy. How much H2O exactly? It's only the "largest and farthest reservoir of water ever detected in the universe," and it weighs in at 140 trillion times the amount in our oceans. Located via the cooperation of two teams of astronomers and their star-gazing equipment -- the Z-Space instrument at California Institute of Technology's Submillimeter Observatory in Hawaii and the Plateau de Bure Interferometer in the French Alps -- this aqueous discovery proves the wet stuff is more universally omnipresent than we once thought. Also, surfing aliens, right?
String theory finds an elegant use for itself with qubit entanglement and black holes
Sure, trying to wrap your head around string theory -- a study in particle physics that's trying to rectify the perceived contradictions between general relativity and quantum mechanics -- can cause more cognitive pain than a colliding god particle. That hasn't stopped anyone from trying to validate its corollaries, and in the interim, researchers like Michael Duff of the Imperial College London. Mr. Duff realized a few years ago there existed some strong relations between formulas pertaining to both black holes (relativity) and four entagled qubits (quantum mechanics). So, in his words, "In a way, there's bad news and good news in our paper. The bad news is, we're not describing the theory of everything. The good news is, we're making a very exact statement which is either right or wrong. There's no in between." We're sure some science cliques are already gearing up to get their troll on. Hit up the PDF below if you want to read it yourself.
Astronomers theorize what it's like when worlds (and black holes) collide
Tight binary solar systems are inhabited in science fiction -- remember the Star Wars world of Tatooine -- but humanity might find such planets inhospitable over the long term, and not just because of the heat. Using NASA's Spitzer telescope, scientists discovered clouds of dust around three such binary systems far too recent to come from the stars themselves, and theorize that as the stars attract one another over time and get closer and closer together, their respective orbiting planets may get closer as well, and crash into one another catastrophically. Meanwhile, when supermassive black holes dance in pairs, they can merge as one, and astrophysicists have recently simulated how such a joining might appear on our telescopes. According to a team of US and Canadian researchers, the pair may emit strong jets of electromagnetic radiation before they merge, which twist around one another and throw off gravitational waves that can help pinpoint the source. Speaking of sources, we've got plenty of those immediately below if you'd like to read more.
First electromagnetic 'black hole' built on earth, nobody raps about it
An electromagnetic black hole -- which sucks in the light surrounding it -- has been built at Southeast University in Nanjing, China for the first time. The device works like cosmological black holes in that it has gravity which is intense enough to bend the surrounding space-time, causing any matter in the neighborhood to spiral inward and create the hole itself. The earth-built 'black hole' for microwave frequencies is constructed of 60 annular strips of meta-materials (yes, that's the stuff of invisibility cloaks). Each strip is an intricately etched circuit board which seamlessly and smoothly connects to the strips next to it, creating both a shell and absorber section to the device. When an electromagnetic wave hits the device, it is trapped and guided through the shell region toward the core, where it is absorbed. The device, which was created by Tie Jun Cui and Qiang Cheng, converts that absorbed light into heat, meaning that future possible applications could include new ways of harvesting solar energy. Hit the read link for a fuller description of this truly bad dude.
EVE Evolved: Features we want in EVE Online
It's been a while since I've done a full-blown opinion piece but this week I figured it would make a nice change from yet more coverage of the recent Apocrypha expansion. No matter where you go in-game, everyone has their own opinion on what features EVE Online needs. For some people, being able to put mining rigs on planets would sound interesting. Others might prefer a new exploration-specialist science vessel or a module that gives resistance to energy neutralisers. There are a lot of ideas out there and some of us spend long nights chatting to friends in-game about the ones they'd like to see implemented. A few pilots have gone as far as to write up full scale proposals to present to CCP on the forum and some of those have even been implemented. This got me thinking – what features would I most like to see implemented in EVE?In this concise opinion piece, I take a look at the top four features I'd like to see make it into EVE Online. What's your top four?
CERN rap video about the Large Hadron Collider creates a black hole of awesomeness
Been having a tough time figuring out just what CERN's Large Hadron Collider does? Worried that it will create a Möbius strip (a rip in the fabric of space where time becomes a loop)? Just love to jam? Watch this CERN-sponsored rap after the break, and have your universe totally destroyed. Er, but not for real.[Via Protein Feed]