Latest news with #darkmatter
Yahoo
14 hours ago
- Science
- Yahoo
Hello, neighbor! See the Andromeda galaxy like never before in stunning new image from NASA's Chandra telescope (video)
When you buy through links on our articles, Future and its syndication partners may earn a commission. The galaxy next door to the Milky Way, Andromeda, has never looked as stunning as it does in a new image from NASA's Chandra X-ray space telescope. The image of the galaxy, also known as Messier 31 (M31), was created with assistance from a range of other space telescopes and ground-based instruments including the European Space Agency (ESA) XMM-Newton mission, NASA's retired space telescopes GALEX and the Spitzer Space Telescope as well as the Infrared Astronomy Satellite, COBE, Planck, and Herschel, in addition to radio data from the Westerbork Synthesis Radio Telescope. All these instruments observed Andromeda in different wavelengths of light across the electromagnetic spectrum, with astronomers bringing this data together to create a stunning and intricate image. The image is a fitting tribute to astronomer Vera C. Rubin, who was responsible for the discovery of dark matter thanks to her observations of Andromeda. As the closest large galaxy to the Milky Way, at just around 2.5 million light-years away, Andromeda has been vital in allowing astronomers to study aspects of galaxies that aren't accessible from our own galaxy. For example, from inside the Milky Way, we can't see our galaxy's spiral arms, but we can see the spiral arms of Andromeda. Every wavelength of light that was brought together to create this incredible new image of Andromeda tells astronomers something different and unique about the galaxy next door. For example, the X-ray data provided by Chandra has revealed the high-energy radiation released from around Andromeda's central supermassive black hole, known as M31*. M31* is considerably larger than the supermassive black hole at the heart of the Milky Way, known as Sagittarius A* (Sgr A*). While our home supermassive black hole has a mass 4.3 million times that of the sun, M31* dwarfs it with a mass 100 million times that of the sun. M31* is also notable for its occasional flares, one of which was observed in X-rays back in 2013, while Sgr A* is a much "quieter" black hole. Andromeda was chosen as a tribute to Rubin because this neighboring galaxy played a crucial role in the astronomer's discovery of a missing element of the universe. An element that we now call dark matter. In the 1960s, Rubin and collaborators precisely measured the rotation of Andromeda. They found that the speed at which this galaxy's spiral arms spun indicated that the galaxy was surrounded by a vast halo of an unknown and invisible form of matter. The mass of this matter provided the gravitational influence that was preventing Andromeda from flying apart due to its rotational speed. The gravity of its visible matter wouldn't have been sufficient to hold this galaxy then, astronomers have discovered that all large galaxies seem to be surrounded by similar haloes of what is now known as dark matter. This has led to the discovery that the matter which comprises all the things we see around us — stars, planets, moons, our bodies, next door's cat — accounts for just 15% of the "stuff" in the cosmos, with dark matter accounting for the other 85%. The finding has also prompted the search for particles beyond the standard model of particle physics that could compose dark matter. Thus, there's no doubt that Rubin's work delivered a watershed moment in astronomy, and one of the most important breakthroughs in modern science, fundamentally changing our concept of the universe. Related Stories: — How did Andromeda's dwarf galaxies form? Hubble Telescope finds more questions than answers — The Milky Way may not collide with neighboring galaxy Andromeda after all: 'From near-certainty to a coin flip' — Gorgeous deep space photo captures the Andromeda Galaxy surrounded by glowing gas June 2025 has been a brilliant month of recognition of Rubin's immense impact on astronomy and her lasting legacy. In addition to this tribute image, the Vera C. Rubin Observatory released its first images of the cosmos as it gears up to conduct a 10-year observing program of the southern sky called the Legacy Survey of Space and Time (LSST). Additionally, in recognition of Rubin's monumental contributions to our understanding of the universe, the United States Mint recently released a quarter featuring Rubin as part of its American Women Quarters Program. She is the first astronomer to be honored in the series.
CNA
a day ago
- Science
- CNA
Chile observatory captures the universe with 3,200-megapixel camera
SANTIAGO :Chile's Vera C. Rubin Observatory, which boasts the world's largest digital camera, has begun displaying its first images of the cosmos, allowing astronomers to figure out how the solar system formed and even whether an asteroid poses a threat to Earth. Located on Pachon Hill in the northern region of Coquimbo, the 8.4-meter (27-1/2-foot) telescope has a 3,200-megapixel camera feeding a powerful data processing system. "It's really going to change and challenge the way people work with their data," said William O'Mullane, a project manager focused on data at Vera Rubin. The observatory detected over 2,100 previously unseen asteroids in 10 hours of observations, focusing on a small area of the visible sky. Its ground-based and space-based peers discover in total some 20,000 asteroids a year. O'Mullane said the observatory would allow astronomers to collect huge amounts of data quickly and make unexpected finds. "Rather than the usual couple of observations and writing an (academic) paper. No, I'll give you a million galaxies. I'll give you a million stars or a billion even, because we have them: 20 billion galaxy measurements," he said. The center is named after American astronomer Vera C. Rubin, a pioneer in finding conclusive evidence of the existence of large amounts of invisible material known as dark matter. Each night, Rubin will take some 1,000 images of the southern hemisphere sky, letting it cover the entire southern sky every three or four nights. The darkest skies above the arid Atacama Desert make Chile one of the best places worldwide for astronomical observation. "The number of alerts the telescope will send every night is equivalent to the inboxes of 83,000 people. It's impossible for someone to look at that one by one," said astrophysicist Francisco Foster.
Reuters
a day ago
- Science
- Reuters
Chile observatory captures the universe with 3,200-megapixel camera
SANTIAGO, June 27 (Reuters) - Chile's Vera C. Rubin Observatory, which boasts the world's largest digital camera, has begun displaying its first images of the cosmos, allowing astronomers to figure out how the solar system formed and even whether an asteroid poses a threat to Earth. Located on Pachon Hill in the northern region of Coquimbo, the 8.4-meter (27-1/2-foot) telescope has a 3,200-megapixel camera feeding a powerful data processing system. "It's really going to change and challenge the way people work with their data," said William O'Mullane, a project manager focused on data at Vera Rubin. The observatory detected over 2,100 previously unseen asteroids in 10 hours of observations, focusing on a small area of the visible sky. Its ground-based and space-based peers discover in total some 20,000 asteroids a year. O'Mullane said the observatory would allow astronomers to collect huge amounts of data quickly and make unexpected finds. "Rather than the usual couple of observations and writing an (academic) paper. No, I'll give you a million galaxies. I'll give you a million stars or a billion even, because we have them: 20 billion galaxy measurements," he said. The center is named after American astronomer Vera C. Rubin, a pioneer in finding conclusive evidence of the existence of large amounts of invisible material known as dark matter. Each night, Rubin will take some 1,000 images of the southern hemisphere sky, letting it cover the entire southern sky every three or four nights. The darkest skies above the arid Atacama Desert make Chile one of the best places worldwide for astronomical observation. "The number of alerts the telescope will send every night is equivalent to the inboxes of 83,000 people. It's impossible for someone to look at that one by one," said astrophysicist Francisco Foster. "We're going to have to use artificial intelligence tools."
Yahoo
2 days ago
- Science
- Yahoo
NASA offers dazzling new sights (and sounds) of the Andromeda galaxy
Even a century after Edward Hubble confirmed its existence, astronomers learn new details about the Andromeda galaxy that help us better understand our cosmic neighborhood and the wider universe. Earlier this week, NASA released its latest detailed images of the Milky Way's spiral sibling, as well an ethereal sonification of its energy wavelengths. Attaining an outside view of the Milky Way galaxy is a bit like trying to examine the entire planet from your backyard—that is to say, it's impossible from humanity's current vantage point. The next best option for astronomers is gazing at similar nearby spiral galaxies, the closest of which is Messier 31. Also known as Andromeda, the Milky Way's most immediate neighbor is about 2.5 million light-years away, and provides an excellent option for studying how spiral galaxies form and evolve over time. It's also where a team led by astronomer Vera Rubin first detected the anomalous material now known as 'dark matter' in the 1960s. The newest glimpses at Andromeda are based on composite data collected by an international array of the world's most powerful telescopes, including the Chandra X-ray Observatory, the ESA's XMM-Newton, and even optical information from a pair of astrophotographers. The various kinds of light span the visible, infrared, radio, and ultraviolet wavelengths. When layered, they depict a vibrant and active galaxy reminiscent of our own—and the information is already helping experts expand on Andromeda's ongoing life story. 'For example, Chandra's X-rays reveal the high-energy radiation around the supermassive black hole at the center of M31 as well as many other smaller compact and dense objects strewn across the galaxy,' NASA explained in its announcement. Astronomers aren't limited to studying visual representations of Andromeda's energy; they can also assess them through sound. In addition to the images, NASA researchers compiled the galaxy datasets into a sonification by separating out each wavelength, rotating them, and stacking them on top of one another in order of their frequency. From top to bottom, that means X-rays, ultraviolet, optical, infrared, and finally radio waves. These are next assigned a range of corresponding notes, with brightness designating volume while spectrum location determines pitch. The result is a dreamlink chorus of tones as the space telescopes traverse Andromeda's 152,000 light-year diameter. There's still an untold wealth of information to learn from the Milky Way's neighbor, possibly even the means to finally understand the dark matter first detected by Rubin. That's at least what NASA hopes to achieve with the upcoming Nancy Grace Roman Space Telescope currently scheduled to go into operation in 2027.
Times
3 days ago
- Science
- Times
Telescope reminds us of the debt we owe Vera Rubin
Vera C Rubin's work did much to demystify the heavens NSF-DOE VERA C RUBIN OBSERVATORY/AP T he American astronomer Vera C Rubin, who died in 2016, was certainly given enormous recognition and credit for her work in her lifetime. Her stellar career led to medals, prizes and awards all over the world. She did not, however, receive the Nobel prize for physics for her pioneering study of galaxy rotation rates in the 1960s and 1970s, work subsequently accepted as strong evidence for the existence of dark matter. Dark matter and dark energy are now thought to comprise 95 per cent of the mass-energy content of the universe. Rubin had to battle prejudice against women in science for many decades. If she did miss out on a Nobel because of her gender, she would not be alone. The shabby failure to fully credit Rosalind Franklin's contribution to the double helix breakthrough is well known. Lisa Meitner, 'the mother of the atomic bomb', was even more ruthlessly snubbed, while her partner in nuclear fission research, Otto Hahn, bagged a Nobel. The brilliance of Marietta Blau, Jocelyn Bell Burnell and Chien-Shiung Wu was also overlooked by Stockholm, while many of their male collaborators were laureated. In Rubin's own field, the great Edwin Hubble, whose work drew on that of Henrietta Swan Leavitt, acknowledged the huge debt he owed her. Just as Hubble gave his name to a revolutionary telescope, so too did Rubin, when the Large Synoptic Survey Telescope in Chile was renamed the Vera C Rubin Observatory in her honour. The first images from this huge yet agile device were published this week, capturing 2,000 undetected asteroids within ten hours. Over the next decade, the southern night sky will be continuously mapped and supernova explosions from billions of years ago will be traced. If our solar system does have a mysterious Planet Nine, Rubin will find it. Perhaps somewhere in those heavens she did so much to demystify, Vera Rubin is having the last laugh.
