100,000 Stars Earth-size planet found: Lightest exoplanet yet orbits Sun-like star Alpha Centauri B Newly found world orbits Alpha Centauri B, 4.3 light years from our SunIt is the lightest exoplanet yet found orbiting a Sun-like starIt is thought to be too hot for life, and there is likely no water presentBut presence suggests there may be other planets within the same system By Daily Mail Reporter Published: 08:18 GMT, 17 October 2012 | Updated: 12:37 GMT, 17 October 2012 An Earth-sized planet has been found orbiting a star in Alpha Centauri, our nearest neighbouring solar system. The mystery world circling Alpha Centauri B is thought to be much too hot to support life, with surface temperatures of around 1,500C. But astronomers say it is likely to be part of a more extensive solar system containing other planets, one or more of which might be habitable. Scroll down for video Next-door neighbour: An artist's impression of the recently found planet orbiting Alpha Centauri B, a member of the triple star system that is the closest to our own 'Alpha Centauri is our closest neighbour.
New comet likely to impress when it passes closest to Earth in December By Alan Pickup, The GuardianSunday, October 14, 2012 20:16 EDT A comet found recently beyond the orbit of Jupiter could well become spectacular late next year and may be a sibling of one of the most celebrated comets of all time. What is formally known as Comet C/2012 S1 (ISON) was not at first recognised as a comet when it was spotted as a 19th magnitude object using a small Russian telescope of the International Scientific Optical Network on 21 September. Its orbit resembles that of Kirch’s Comet, the Great Comet of 1680, which hangs over Rotterdam in our illustration from a painting by the Dutch artist Lieve Verschuier. This is not to say that the comet of 1680 and Comet ISON are the same object since both probably take thousands of years to orbit the Sun. The fact that Comet ISON is seen easily so far from the Sun suggests that it is large enough to survive its solar encounter and that it will not fizzle out as some close-approach comets have done before.
11 cheap gifts guaranteed to impress science geeks Science comes up with a lot of awesome stuff, and you don't need a Ph.D, a secret lab, or government funding to get your hands on some of the coolest discoveries. We've got a list of 11 mostly affordable gifts that are guaranteed to blow your mind, whether or not you're a science geek. Click on any image to see it enlarged. 1. Also known as frozen smoke, Aerogel is the world's lowest density solid, clocking in at 96% air. Aerogel isn't just neat, it's useful. Price: $35 2. Inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. EcoSpheres came out of research looking at ways to develop self-contained ecosystems for long duration space travel. Price: $80 3. NASA has been trying to figure out how to get a sample of rock back from Mars for a while now. Every once in a while, a meteorite smashes into Mars hard enough to eject some rocks out into orbit around the sun. Price: $70+ 4. Price: $150 5. So what's next year's new color going to be? 6.
Sizes of the Universe Poster Share this infographic on your site! <a href=" src=" alt="Sizes of the Universe" width="500" border="0" /></a><br />Source: <a href=" Sleuth</a> Embed this infographic on your site! Have you ever wondered how big the universe is? Maybe you've wondered how big Texas is in comparison to Pluto? Or how big an atom is compared to a microscopic organism. Interact: Magnifying the Universe Interactive Infographic
Physics 20b: Introduction to Cosmology - Spring 2010 - Download free content from UC Irvine Top 10 Strangest Things In Space Space Let’s be honest: space is an absolutely crazy place. Most science fiction writers throw in a planet with two stars that looks vaguely like Southern California, and call it a day. Everyone knows that shooting stars are just meteors entering the atmosphere, right? When a binary star system is gobbled down by the supermassive black hole (that’s the scientific term, by the way) at the center of a galaxy, one of the two partners is consumed, while the other is ejected at high speed. Gliese 581 c wants to kill you. This planet orbits a red dwarf star, many times smaller than our Sun, with a luminosity of only 1.3% of our sun. The tidal locking of the planet alone results in some pretty odd features. Living on Gliese 581 c would have its challenges, though. As if one or two giant, fiery balls of gas weren’t enough, here we have the Castor System. Space Raspberries and Rum For the last few years, scientists have been studying a dust cloud near the center of our Milky Way galaxy.
Scientists say mysterious 'Oumuamua' object could be an alien spacecraft Get the Mach newsletter. Nov. 5, 2018 / 7:06 PM GMT By David Freeman Maybe it's an alien spacecraft. Scientists have been puzzling over Oumuamua ever since the mysterious space object was observed tumbling past the sun in late 2017. Now a pair of Harvard researchers are raising the possibility that Oumuamua is an alien spacecraft. The researchers aren't claiming outright that aliens sent Oumuamua. Who would have sent such a spacecraft our way — and why? "It is impossible to guess the purpose behind Oumuamua without more data," Avi Loeb, chairman of Harvard's astronomy department and a co-author of the paper, told NBC News MACH in an email. Earthlings have launched simple solar-powered lightsails of our own, and Loeb is an adviser to Breakthrough Starshot, an initiative that plans to send a fleet of tiny laser-powered lightsail craft to the nearest star system. Coryn Bailer-Jones, an astronomer at the Max Planck Institute for Astronomy in Heidelberg, Germany, voiced similar objections.
Scientists detect rare crash of two mismatched black holes for the first time ever | Space Colliding black holes aren't always as evenly matched as scientists expected, according to a cosmic chirp astronomers have puzzled over for a year. On April 12, 2019, gravitational wave detectors picked up a signal of space-time ripples caused by colliding black holes — which in and of itself has gone from groundbreaking to nearly mundane over the past five years. But as scientists studied the detection more closely, they realized that it didn't match the signals they have seen so far. Instead of two evenly matched black holes, the new detection seemed to be triggered by a lopsided merger in which one black hole was three or four times more massive than the other. "It's an unlikely observation," Maya Fishbach, a doctoral candidate at the University of Chicago who presented the new discovery, said during her talk. Related: Eureka! Scientists studied those 10 mergers during LIGO's first two observing runs, conducted between 2015 and 2017. Related: Eureka!
Four ‘Mysterious Signals From Outer Space’ Are Coming From Galaxies Like Ours, Say Scientists Go outside on a hot day and feel the Sun on your skin. Now imagine how much energy our Sun emits in an entire human lifetime. Compress all that energy into a single burst lasting a mere millisecond and you’ll understand why fast radio bursts (FRBs) are one of the hottest topics in astronomy. First discovered in 2007 at Australia’s Parkes radio telescope, FRBs are very brief, very bright single radio pulses that can last for several milliseconds. It’s estimated that several thousand per day are occurring over the entire sky. The most famous one is FRB 121102, unusual because it’s been detected a few hundred times since it first “burst” onto the scene in 2014. So what’s causing them? Well, it’s not black holes, according to Dr. “These precisely localised fast radio bursts came from the outskirts of their home galaxies, removing the possibility that they have anything to do with supermassive black holes,” said Dr. Wishing you clear skies and wide eyes. So what’s causing them?
A Repeating Signal Is Coming From Another Galaxy The paper on this discovery, published earlier this month, marked the end of formal observations in February. Like so many people this year, Li has spent most of her days at home, rarely venturing beyond the walls of her small apartment in Bonn, Germany, but the Canadian observatory continues to scan the skies, catching the fleeting FRBs as little smudges of black against a plot of white noise. When Li and I spoke this week, she told me she’s still checking—and the rhythm is still there. Read: What’s better than one mysterious cosmic signal? The discovery is an intriguing addition to a growing inventory of knowledge in a field whose earliest evidence was almost dismissed as a fluke. Astronomers accepted that they had detected a real event, but they still thought FRBs were one-offs. When astronomers managed to trace an FRB to its home galaxy for the first time, they found a small, lively galaxy, where new stars blinked into existence more than 100 times faster than in our own Milky Way.
Is 'Planet Nine' actually a grapefruit-sized black hole? Big new telescope could find out | Space A coming sky survey will help test a wild idea — that a grapefruit-sized black hole lurks undiscovered in the outer solar system. Over the past few years, researchers have noticed an odd clustering in the orbits of multiple trans-Neptunian objects (TNOs), which dwell in the dark depths of the far outer solar system. Some scientists have hypothesized that the TNOs' paths have been sculpted by the gravitational pull of a big object way out there, something five to 10 times more massive than Earth (though others think the TNOs may just be tugging on each other). This big "perturber," if it exists, may be a planet — the so-called "Planet Nine," or "Planet X" or "Planet Next" for those who will always regard Pluto as the ninth planet. Related: The evidence for 'Planet Nine' in our solar system (gallery) Astronomers are already scanning the heavens for any sign of Planet Nine, and they should soon be able to hunt for the putative black hole as well, a new study reports.
NASA's Hubble telescope solves the curious case of Betelgeuse The saga of Betelgeuse has been ongoing for nearly a year now. When the bright star began to suddenly dim, reaching a shocking 40 percent of its regular luminosity, astronomers held their breath — secretly hoping that the star would explode in a massive supernova before our eyes. Today, Betelgeuse shines at its usual brightness but a mystery endures: Scientists have not yet been able to determine what initially caused the sudden dip in brightness. However, new observations by the Hubble Space Telescope may have finally cracked the curious case. The findings were published Thursday in a study in the Astrophysical Journal. Based on the data recorded by NASA's Hubble Space Telescope, researchers hypothesize that the dimming of the red, supergiant star was likely caused by the sudden ejection of a massive amount of hot material that blocked the star's light from reaching us here on Earth. The case of Betelgeuse — Betelgeuse is a red, giant star in the constellation Orion.
NASA watches as weird 'dent' in Earth's magnetic field splits in two | Space There's something very strange happening high above South America and the nearby Atlantic Ocean, and NASA is on the case. Meet the South Atlantic Anomaly, a strange dent in Earth's magnetic field that is growing and splitting. It's been there for decades, but over time the anomaly has slowly changed. Although you'd never notice anything was wrong from the ground, for satellites, changes to the magnetic field that envelopes Earth can be a big deal — hence NASA's interest in the anomaly and its activities. The connection comes because the magnetic field blocks charged particles spewed out by the sun from reaching Earth. But at the South Atlantic Anomaly, the field is dented, lowering the protective barrier above that part of Earth. Video: South Atlantic Anomaly in Earth's magnetic field described in detailRelated: Earth's magnetic field booms like a drum, but no one can hear it