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The largest known galaxy was just discovered, and you won’t believe how massive it is
Scientists have discovered the largest known galaxy ever. The new discovery is located around 3 billion light-years away. The galaxy, which is named Alcyoneus, is a giant radio galaxy. The galaxy is roughly 16.3 million light-years long. For reference, our own galaxy measures under 106,000 light-years. That makes Alcyoneus roughly 153.77 times longer than the Milky Way.
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Galaxy S9 Plus vs. Pixel 2 XL: a new low-light photo champion?
Samsung’s 2018 flagship phone, the Galaxy S9, is the first in the world with an f/1.5 lens aperture. But set aside all the hype about it being part of a dual-aperture system. What I really wanted to know about this change is how it might improve Samsung’s low-light imaging. Having the widest aperture means being able to soak up the most light, so, in theory at least, the Galaxy S9 should be the best cameraphone for situations where light is at a premium.
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Kronos: The eater of planets
The Sun has been pretty good to us here on Earth over the last billion or so years. Sure we get the occasional solar storm and some deviations from ideal temperatures. But, by and large, we have a relatively supportive parent star. It’s nothing like those poor planets that orbit the star Kronos (HD 240430), located some 350 light-years away. On September 15, a team of Princeton astronomers posted a paper on the physics pre-print site arXiv.org that argues the star Kronos devoured over a dozen of its rocky inner planets during the course of its 4 billion year lifetime.
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Extent of human radio broadcasts
Humans have been broadcasting radio waves into deep space for about a hundred years now, since the days of Marconi. That, of course, means there is an ever-expanding bubble announcing Humanity's presence to anyone listening in the Milky Way. This bubble is astronomically large (literally), and currently spans approximately 200 light years. But how big is this, really, compared to the size of the Galaxy in which we live (which is, itself, just one of countless billions of galaxies in the observable universe?
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Stephen Hawking is being sent to space
Stephen Hawking is going to go to space. The cosmologist and physicist will leave the Earth on board Richard Branson's spaceship, he has said. Professor Hawking told Good Morning Britain that he'd never dreamed he'd be able to head into space. But "Richard Branson has offered me a seat on Virgin Galactic, and I said yes immediately", he said.
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Samsung’s Galaxy Note 7 makes the no-fly list
The Galaxy Note 7's short, explosive life was cut short earlier this week, when Samsung issued a second recall for all devices and permanently shut down production. But plenty of the phones are still out there in the wild, and Samsung and government regulators are trying to limit the potential risks associated with using the phone. To that end, the United Federal Aviation Administration and the Pipeline and Hazardous Materials Safety Administration are expected to completely ban all Galaxy Note 7s from all US flights starting today, according to a report in Bloomberg.
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T-Mobile is second US carrier to halt Galaxy Note 7 sales, giving $25 credit to affected customers
T-Mobile is halting sales of the Samsung Galaxy Note 7 after a number of the supposedly
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What Is This X-Shape at the Center of the Milky Way?
A discovery forged in the Twittersphere. By Becky Ferreira.
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M34 (NGC1039)
Open cluster in Perseus
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NASA stitched together thousands of Hubble images to create this mesmerizing galaxy zoom
Now you can experience what it's like to travel to the center of the galaxy in a video that NASA created from images taken by the Hubble Space Telescope.
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See a Stunning New View of the Milky Way
Astronomers stitched together more than 700 maps to create the most detailed image ever of our galaxy from the Southern Hemisphere. [Big]
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Explore The Solar System: 360 Degree Interactive Tour!
Take a 360 degree virtual tour of our Solar System, with the help of Crash Course Astronomy host Phil Plait!
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Scientists get first glimpse of black hole eating star, ejecting high-speed flare
An international team of astrophysicists led by a Johns Hopkins University scientist has for the first time witnessed a star being swallowed by a black hole and ejecting a flare of matter moving at nearly the speed of light. The finding reported Thursday in the journal Science tracks the star—about the size of our sun—as it shifts from its customary path, slips into the gravitational pull of a supermassive black hole and is sucked in, said Sjoert van Velzen, a Hubble fellow at Johns Hopkins.
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A 'dead' galaxy full of dark matter is lurking close to home
At the edge of the Milky Way, there's a small galaxy called Triangulum II. It has just 1,000 stars, compared to the 100 billion estimated in our own galaxy, and its days of star formation are over, leaving it "dead." But Triangulum II may have a dark secret - one that makes it the most interesting ghost town in space.
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The Galaxy That Got Too Big
We can’t help ourselves—we’re crazy about big things. We’ll venture miles out of our way to see the world’s “largest” rifle (33.3 feet long; Ishpeming, Michigan), high-heeled shoe (6.1 feet tall; New York City), or ball of twine (7.8 million feet unraveled; Cawker City, Kansas).
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Supermassive black holes found spiraling in at seven percent light speed
The first system found moving so fast has big implications for galaxy evolution.
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Too big for its boots: black hole is 30 times expected size
The central supermassive black hole of a recently discovered galaxy is far larger than should be possible, according to current theories of galactic evolution. New work, carried out by astronomers at Keele University and the University of Central Lancashire, shows that the black hole is much more massive than it should be, compared to the mass of the galaxy around it. The scientists publish their results in a paper...
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Two supermassive black holes on a collision course could shake the cosmos
The collision would be so powerful that bursts of gravitational waves could ripple through the fabric of space-time itself.
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What It Looks Like To Leave Our Solar System At The Speed Of Light
There is no better way to grasp the enormity of space than hitching a ride on a photon from the Sun. Take an hour, and just let the sheer vastness of our universe sink in. And this video stops at Jupiter.
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NASA Just Released the Most Detailed Photos of the Cosmos Ever Taken
So much has changed in 18 years.
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