अंतरिक्ष विज्ञान – Page 3 – आवारा मुसाफिर

Staggering structure in 19 nearby spiral galaxies captured

January 30, 2024393 Views

NASA’s Webb Telescope depicts a new treasure trove of images with clearly defined arms It’s oh-so-easy to be absolutely mesmerized by these spiral galaxies. Follow their clearly defined arms, which are brimming with stars, to their centers, where there may be old star clusters and – sometimes – active supermassive black holes. Only NASA’s James Webb Space Telescope can deliver highly detailed scenes of nearby galaxies in a combination of near- and mid-infrared light – and a set of these images was publicly released today. These Webb images are part of a large, long-standing project, the Physics at High Angular resolution in Nearby GalaxieS (PHANGS) program, which is supported by more than 150 astronomers worldwide. Before Webb took these images, PHANGS was already brimming with data...

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Missing link found: supernovae give rise to black holes or neutron stars

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January 11, 2024487 Views

Astronomers have found a direct link between the explosive deaths of massive stars and the formation of the most compact and enigmatic objects in the Universe — black holes and neutron stars. With the help of the European Southern Observatory’s Very Large Telescope (ESO’s VLT) and ESO’s New Technology Telescope (NTT), two teams were able to observe the aftermath of a supernova explosion in a nearby galaxy, finding evidence for the mysterious compact object it left behind. When massive stars reach the end of their lives, they collapse under their own gravity so rapidly that a violent explosion known as a supernova ensues. Astronomers believe that, after all the excitement of the explosion, what is left is the ultra-dense core, or compact remnant, of the star. Depending on how massive th...

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New 1.5-billion-pixel image of Running Chicken Nebula

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December 22, 2023627 Views

ESO’s VST captures the stellar nursery in an unprecedented detail While many holiday traditions involve feasts of turkey, soba noodles, latkes or Pan de Pascua, this year, the European Southern Observatory (ESO) is bringing you a holiday chicken. The so-called Running Chicken Nebula, home to young stars in the making, is revealed in spectacular detail in this 1.5-billion-pixel image captured by the VLT Survey Telescope (VST), hosted at ESO’s Paranal site in Chile. This vast stellar nursery is located in the constellation Centaurus (the Centaur), at about 6500 light-years from Earth. Young stars within this nebula emit intense radiation that makes the surrounding hydrogen gas glow in shades of pink. The Running Chicken Nebula comprises several clouds, all of which we can see in th...

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ESO’s biggest eye on the sky getting ready

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December 18, 2023683 Views

First segments of the world's largest telescope mirror shipped to Chile The construction of the European Southern Observatory’s Extremely Large Telescope (ESO's ELT) has reached an important milestone with the delivery to ESO and shipment to Chile of the first 18 segments of the telescope’s main mirror (M1). Once they arrive in Chile, the segments will be transported to the ELT Technical Facility, at ESO’s Paranal Observatory in the country’s Atacama Desert, where they will be coated in preparation for their future installation on the telescope main structure. Unable to be physically made in one piece, M1 will consist of 798 individual segments arranged in a large hexagonal pattern, with an additional 133 being produced to facilitate the recoating of segments. Primary mirror, M1, se...

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Astronomers discover disc around star in another galaxy for the first time

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November 29, 2023673 Views

Our sun and other stars form when a dense clump of interstellar gas and dust collapses under its own gravitational pull. Once a star is born at the center of such a cloud, leftover material forms a swirling disk around it that feeds stellar growth and often gives rise to planets. Newborn stars with these circumstellar disks had been observed by astronomers only in our Milky Way galaxy - until now. Researchers said on Wednesday they have spotted such a disk around a star larger and more luminous than the sun residing in one of our nearest neighboring galaxies, the Large Magellanic Cloud. In a remarkable discovery, astronomers have found a disc around a young star in the Large Magellanic Cloud, a galaxy neighbouring ours. It’s the first time such a disc, identical to those forming pla...

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We have almost 400,000 galaxies in our cosmic neighbourhood

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October 20, 2023636 Views

The Siena Galaxy Atlas will be an invaluable tool for research into how galaxies form and evolve, gravitational waves, dark matter, and the structure of our universe Mapping the night sky is essential for understanding our universe. Both researchers and amateur astronomers can now access a new atlas with detailed information on more than 380,000 galaxies: the Siena Galaxy Atlas (SGA). The collection, which provides precise measurements of the locations, shapes, and sizes of large nearby galaxies, promises to be a boon to future astronomical inquiry and is freely accessible online for all to use. The research was published today in the Astrophysical Journal Supplement. The Siena Galaxy Atlas compiles data from three surveys completed between 2014 and 2017 known as the DESI Legacy S...

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What would a spa in a spaceship look like!

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October 16, 2023671 Views

Space Perspective unveils first-ever space spa as part of its spaceship Neptune capsule interior World's First Carbon-Neutral Spaceflight Experience company, offers a safe and gentle journey with no rockets or training required Inside a pressurized capsule for eight explorers, a one-of-a-kind restroom provides a serene and spa-like sanctuary during a transformative six-hour flight Space Perspective, the world's first carbon-neutral spaceflight experience company, today unveiled the custom design for its restroom – a first-ever Space Spa. Space Perspective has completely reimagined human spaceflight with an innovative spacecraft (Spaceship Neptune) that features a pressurized capsule propelled slowly to the edge of space by a giant SpaceBalloon. Spaceship Neptune Tucked in...

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Mysterious Neptune dark spot detected from Earth for the first time

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August 26, 20232953 Views

Using ESO’s Very Large Telescope (VLT), astronomers have observed a large dark spot in Neptune’s atmosphere, with an unexpected smaller bright spot adjacent to it. This is the first time a dark spot on the planet has ever been observed with a telescope on Earth. These occasional features in the blue background of Neptune’s atmosphere are a mystery to astronomers, and the new results provide further clues as to their nature and origin. Large spots are common features in the atmospheres of giant planets, the most famous being Jupiter’s Great Red Spot. On Neptune, a dark spot was first discovered by NASA’s Voyager 2 in 1989, before disappearing a few years later. “Since the first discovery of a dark spot, I’ve always wondered what these short-lived and elusive dark features are,” says Pat...

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New type of star gives clues to mysterious origin of magnetars

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August 19, 20232453 Views

Magnetars are the strongest magnets in the Universe. These super-dense dead stars with ultra-strong magnetic fields can be found all over our galaxy but astronomers don’t know exactly how they form. Now, using multiple telescopes around the world, including European Southern Observatory (ESO) facilities, researchers have uncovered a living star that is likely to become a magnetar. This finding marks the discovery of a new type of astronomical object — massive magnetic helium stars — and sheds light on the origin of magnetars. Despite having been observed for over 100 years, the enigmatic nature of the star HD 45166 could not be easily explained by conventional models, and little was known about it beyond the fact that it is one of a pair of stars, is rich in helium and is a few times m...

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Virgin Galactic’s first space tourists finally soar

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August 12, 2023740 Views

Includes an Olympian who brought ticket 18 years ago, and a mother-daughter duo Virgin Galactic rocketed to the edge of space with its first tourists Thursday, a former British Olympian who bought his ticket 18 years ago and a mother-daughter duo from the Caribbean. The rocket-powered VSS Unity craft dropped from the carrier plane over New Mexico around 9:20 a.m. local time and blasted its four passengers, a company instructor and three tourists, to an altitude of roughly 55 miles (88.51 km). Virgin Galactic's mothership Eve, carrying the rocket-powered plane Unity 22, takes off from Spaceport America, near Truth or Consequences, N.M., Thursday, Aug. 10, 2023. (AP Photo/Andrés Leighton) The space plane glided back to a runway landing at Spaceport America in the New Mexico dese...