
World's largest digital camera unveils dazzling first images of the universe
These images, composed from hundreds of exposures taken over just seven hours, reveal intricate details and previously hidden structures within these stellar nurseries.
The LSST Camera at the heart of Rubin Observatory captures extremely fine features in distant galaxies, stars, and other celestial objects. (Photo: VCRO)
Also featured are dazzling spiral galaxies within the Virgo Cluster, including two bright blue spirals, and a mosaic of millions of stars and galaxies, some never before cataloged.Funded by the US National Science Foundation and the Department of Energy, the $810 million observatory is set to scan the southern sky every three to four nights for the next decade, aiming to image 20 billion galaxies and discover countless new asteroids and celestial phenomena. advertisementIn its first test observations alone, the Rubin Observatory identified thousands of asteroids, including several near-Earth objects, none of which pose a threat to our planet.
Rubin will generate approximately 20 terabytes of data per night, plus an additional 15 petabyte catalog database. (Photo: VCRO)
Named after pioneering astronomer Vera Rubin—whose work provided the first compelling evidence for dark matter—the observatory is poised to deepen our understanding of the universe's most elusive mysteries, including dark energy and the nature of cosmic evolution.'The Rubin Observatory will capture more information about our universe than all optical telescopes throughout history combined,' said Brian Stone, acting director of the National Science Foundation.
The amount of data gathered by Rubin Observatory in its first year alone will be greater than that collected by all other optical observatories combined. (Photo: VCRO)
Scientists and astronomers worldwide are eagerly anticipating the observatory's full scientific mission, which promises to transform our view of the cosmos and inspire new generations of skywatchers.advertisementAs more images are released, the world will watch as the Vera C. Rubin Observatory continues its groundbreaking journey, mapping the universe in stunning detail and revealing the ever-changing tapestry of the night sky- Ends
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News18
12 hours ago
- News18
700 Million Light-Years Away, One Galaxy Steals Stars From Another, Forming A Bridge
Last Updated: Scientists say Abell 3667 formed from two smaller clusters colliding a billion years ago, with each cluster's central galaxy and satellites now converging Astronomers have been astounded by a remarkable event unfolding in space. Approximately 700 million light-years from Earth, two enormous galaxies are being drawn together by mutual gravitational forces. For the first time in a cluster so proximate, scientists have observed stars being pulled from one galaxy towards the other. This phenomenon has been witnessed in the galaxy cluster Abell 3667, where a faint but extensive stream of stars, stretching roughly 1 million light-years, is forming. This stellar bridge is linking the cluster's two brightest galaxies. According to scientists, the grand union of two clusters, Abell 3667, results from the collision of two smaller clusters that began merging about a billion years ago. Each cluster had its own dominant central galaxy, and now these giants, along with their satellite galaxies, are converging. The formation of the star bridge during this time is a testament to their long history and the strength of the gravity in the region. Anthony Englert, a PhD researcher at Brown University, remarked, 'This is the first time such a structure has been seen on such a large scale and in such a close cluster. This was a big surprise for us." The bridge, made of intra-cluster light (ICL), comprises light from stars that have been stripped from their original galaxies and are floating in space. Observing such faint light was challenging, requiring scientists to combine data accumulated over several years from the Dark Energy Camera at Cerro Tololo Inter-American Observatory in Chile. The final image was created by stacking a total of 28 hours of data. Englert noted, 'It was just a coincidence that many astronomers took pictures of Abell 3667 over the years and we saw this view by combining them all." Galaxies At Both Ends Of The Bridge At the upper end of the bridge lies IC 4965, a lenticular (disk-like) galaxy with several smaller galaxies nearby that are joining the cluster. At the lower end is JO171, known as the 'Jellyfish Galaxy', which has long streams of gas being pulled from one side. As JO171 merges with Abell 3667, its gas reserves are being depleted, halting star formation in some regions. Clue To The Mystery Of Dark Matter This bridge of stars is not only visually stunning but also scientifically significant. Researchers believe that intra-cluster light can map the distribution of dark matter, which constitutes 80% of the universe's mass but remains invisible. Co-author Ion Dell'Antonio explained, 'The distribution of this light mimics the distribution of dark matter. It gives us a chance to 'see' dark matter." This discovery is just the beginning. Starting next year, the Vera C. Rubin Observatory will commence its Legacy Survey of Space and Time (LSST), creating an extraordinary map of the southern sky over ten years. Using the world's largest digital camera, it will unveil new stories of thousands of galaxy clusters. view comments Disclaimer: Comments reflect users' views, not News18's. Please keep discussions respectful and constructive. Abusive, defamatory, or illegal comments will be removed. News18 may disable any comment at its discretion. By posting, you agree to our Terms of Use and Privacy Policy.


Time of India
3 days ago
- Time of India
NASA shares thrilling update on the mysterious interstellar object racing through our solar system
NASA has unveiled groundbreaking new details about a mysterious interstellar object , known as 3I/ATLAS , hurtling through our solar system at unprecedented speeds. First spotted on July 1, this visitor from another star system has captivated scientists worldwide with its incredible velocity of 130,000 miles per hour and enigmatic nature. Recent observations by the Hubble Space Telescope have provided the sharpest images yet, revealing critical insights about its size, composition, and trajectory. These revelations mark an important step in understanding the rare visitors that journey across the galaxy into our cosmic neighbourhood. NASA confirms 3I/ATLAS as the fastest interstellar object ever detected NASA's Hubble Space Telescope observations have confirmed that 3I/ATLAS is travelling through our solar system at an extraordinary speed of 130,000 miles per hour (209,000 km/h), making it the fastest interstellar object ever recorded. This speed far exceeds that of previous interstellar visitors such as 'Oumuamua and Borisov. Scientists explain that the object's velocity is the result of billions of years of gravitational interactions, known as the 'gravitational slingshot effect,' where passing stars, planets, and nebulae impart additional momentum to the comet. This extreme speed means the object is only briefly visible as it races through, providing a fleeting window of opportunity for study. NASA's continuous monitoring aims to capture as much data as possible during its swift passage. Image: Daily Mail Size estimates refined: NASA reveals 3I/ATLAS is smaller but still immense Initial observations by the Vera C. Rubin Observatory suggested that 3I/ATLAS's icy core might be around seven miles (11.2 km) wide. However, NASA's Hubble Space Telescope has now refined these estimates, revealing that the core is smaller — at most 3.5 miles (5.6 km) across, and possibly as little as 1,000 feet (320 meters) in diameter. Despite being smaller than first believed, this still makes 3I/ATLAS the largest interstellar object ever discovered, dwarfing the next largest known visitor by up to 14 times. The high-resolution images also highlight the comet's glowing gas halo, which had made it appear larger in earlier, less detailed observations. Understanding the true size helps scientists model its composition and behavior as it interacts with solar radiation. NASA confirms 3I/ATLAS's cometary nature and its spectacular glowing tail Thanks to NASA's powerful telescopes, scientists have confirmed that 3I/ATLAS is not a solid rock but a comet — a chunk of ice, frozen gases, and dust surrounded by a halo of evaporating material. The Hubble images reveal a dust plume streaming from the side of the comet heated by the Sun, along with a faint tail trailing behind it. This tail is formed as the comet's surface warms up, causing ice to vaporize and release gas and dust into space, creating the characteristic glowing appearance. This phenomenon is similar to that seen in comets within our solar system, but 3I/ATLAS's interstellar origin and extreme speed make it a rare and valuable subject for study. NASA expects the tail and dust plume to become more pronounced as the object approaches its closest point to the Sun. Ancient traveler: NASA estimates 3I/ATLAS is twice as old as our solar system One of the most astonishing revelations from NASA's studies is the estimated age of 3I/ATLAS. Scientific analysis suggests this object has been orbiting the Milky Way for at least eight billion years — roughly twice the age of our own 4.6 billion-year-old solar system. This implies 3I/ATLAS formed long before our Sun and planets came into existence, making it a true cosmic relic . Its journey through the galaxy has likely included multiple gravitational encounters with stars and interstellar clouds, which may have shaped its trajectory and speed. Studying such an ancient object offers scientists a unique glimpse into the conditions and materials present in the early universe and helps refine models of galactic evolution. Safe passage confirmed by NASA: No threat to Earth Despite its immense speed and close approach to the Sun, NASA has assured the public that 3I/ATLAS poses no threat to Earth. The comet will reach its closest point to the Sun in late October, passing just inside the orbit of Mars at about 130 million miles (210 million kilometers). Crucially, it will be on the opposite side of the Sun relative to Earth during this time, ensuring no risk of collision or gravitational disturbance. NASA continues to monitor the comet's trajectory precisely, as the interaction with the Sun's heat may slightly alter its path. After passing the Sun, 3I/ATLAS will head back out into interstellar space, continuing its long journey through the galaxy. A new era of discovery: NASA leads the charge in interstellar object research 3I/ATLAS marks only the third confirmed interstellar object ever detected, following 1I/'Oumuamua in 2017 and 2I/Borisov in 2019. NASA's advancements in telescope technology, sky surveys, and space observatories like Hubble have ushered in a new era of interstellar discovery. Researchers expect that as survey instruments become more sensitive and comprehensive, the frequency of detecting such visitors will increase. NASA plans to utilize not only Hubble but also the James Webb Space Telescope , the Transiting Exoplanet Survey Satellite (TESS), and the Neil Gehrels Swift Observatory to study 3I/ATLAS in multiple wavelengths. This coordinated effort will deepen our understanding of the composition, origin, and behavior of interstellar objects and their role in the cosmic ecosystem.


India Today
11-07-2025
- India Today
Interstellar object infiltrating Solar System could be oldest comet seen by humans
A newly discovered interstellar comet, 3I/ATLAS, is captivating astronomers worldwide as evidence mounts that there is more to it than meets the analysis points to evidence suggesting it may be the oldest comet ever observed by on July 1, 2025, by the ATLAS survey telescope, this cosmic visitor is believed to be around 7 billion years old—making it approximately 3 billion years older than our own 4.5 billion-year-old solar A RARE INTERSTELLAR VISITOR3I/ATLAS is only the third object ever seen entering our solar system from beyond its boundaries, following the discoveries of 1I/'Oumuamua in 2017 and 2I/Borisov in comets such as Halley's, which formed alongside the solar system, interstellar objects like 3I/ATLAS are thought to have originated in distant and ancient regions of the IN THE MILKY WAY'S THICK DISKA team led by University of Oxford astronomer Matthew Hopkins theorises that 3I/ATLAS comes from the Milky Way's 'thick disk'—a region populated by some of the galaxy's oldest stars. The discovery has invigorated the astronomical community. (Photo: Nasa) Its steep trajectory through the galaxy supports this hypothesis. 'This is an object from a part of the galaxy we've never seen up close before,' said Oxford astrophysicist Chris Lintott, emphasizing the uniqueness of this ICE AND COMETARY ACTIVITYAs 3I/ATLAS approaches the sun, astronomers expect its frozen ices to sublimate, releasing gas and forming a glowing coma and tail—the signature features of a observations already show the comet bursting to life with activity, and it appears larger than its interstellar telescopes, including the Vera C. Rubin Observatory, are now turning their gaze to 3I/ATLAS. Scientists predict that Rubin's upcoming Legacy Survey of Space and Time could uncover dozens more interstellar objects, with some potentially rivalling 3I/ATLAS in size and discovery has invigorated the astronomical community and promises to deepen our understanding of the galaxy's most ancient building origins of 3I/ATLAS were investigated using the Otautahi–Oxford Model, developed by Hopkins as part of his doctoral discovery provided a real-time opportunity to test this new model on an object of unprecedented age and origin, marking a milestone in the study of interstellar visitors.- EndsMust Watch