अंतरिक्ष विज्ञान – Page 8 – आवारा मुसाफिर

NASA’s Webb catches fiery hourglass as new star forms

November 17, 2022828 Views

Webb’s NIRCam Instrument Shows the Beginning of Protostar Evolution NASA’s James Webb Space Telescope has revealed the once-hidden features of the protostar within the dark cloud L1527, providing insight into the beginnings of a new star. These blazing clouds within the Taurus star-forming region are only visible in infrared light, making it an ideal target for Webb's Near-Infrared Camera (NIRCam). The protostar within the dark cloud L1527, shown in this image from NASA’s James Webb Space Telescope, is embedded within a cloud of material feeding its growth. Ejections from the star have cleared out cavities above and below it, whose boundaries glow orange and blue in this infrared view. The upper central region displays bubble-like shapes due to stellar “burps,” or sporadic ejections...

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NASA’s next-generation Artemis rocket lifts off on test flight to moon

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November 16, 2022185 Views

NASA's towering next-generation moon rocket blasted off from Florida early on Wednesday on its debut flight, a crewless voyage inaugurating the U.S. space agency's Artemis exploration program 50 years after the final Apollo moon mission. The 32-story Space Launch System (SLS) rocket surged off the launch pad from the Kennedy Space Center in Cape Canaveral at 1:47 a.m. EST (0647 GMT), to send its Orion capsule on a three-week test journey around the moon and back without astronauts aboard. About 90 minutes after launch, the rocket's upper stage fired thrusters for a "trans-lunar injection" burn propelling Orion out of Earth orbit on course for the moon. That put the capsule on track for a 25-day flight that will bring it to within 60 miles (97 km) of the lunar surface before sailing ...

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ESO images a wondrous star factory

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November 11, 2022652 Views

For the past 60 years the European Southern Observatory (ESO) has been enabling scientists worldwide to discover the secrets of the Universe. It mark this milestone by bringing a spectacular new image of a star factory, the Cone Nebula, taken with ESO’s Very Large Telescope (VLT). On 5 October 1962 five countries signed the convention to create ESO. Now, six decades later and supported by 16 Member States and strategic partners, ESO brings together scientists and engineers from across the globe to develop and operate advanced ground-based observatories in Chile that enable breakthrough astronomical discoveries. On the occasion of ESO’s 60th anniversary it is releasing this remarkable new image of the Cone Nebula, captured earlier this year with one of ESO’s telescopes and sel...

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Closest known black hole to Earth spotted by astronomers

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November 5, 2022208 Views

Astronomers have discovered the closest known black hole to Earth, just 1,600 light-years away. Scientists reported Friday that this black hole is 10 times more massive than our sun. And it’s three times closer than the previous record-holder. It was identified by observing the motion of its companion star, which orbits the black hole at about the same distance as Earth orbits the sun. The black hole was initially identified using the European Space Agency’s Gaia spacecraft, said Kareem El-Badry of the Harvard-Smithsonian Center for Astrophysics. Astronomers using the International Gemini Observatory, operated by NSF’s NOIRLab, have discovered the closest-known black hole to Earth. Credit: International Gemini Observatory/NOIRLab/NSF/AURA/J. da Silva/Spaceengine/M. Zamani El-Badr...

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ESO captures the ghost of a giant star

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November 1, 2022167 Views

Eerie image shows spectacular aftermath of a large star's death The aftermath of a large star's explosive death is seen in an image released on Monday by the European Southern Observatory, showing immense filaments of brightly shining gas that was blasted into space during the supernova. Before exploding at the end of its life cycle, the star is believed to have had a mass at least eight times greater than our sun. It was located in our Milky Way galaxy about 800 light years from Earth in the direction of the constellation Vela. A light year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km). This image shows a view of the orange and pink clouds that make up what remains after the explosive death of a massive star - the Vela supernova remnant. This imag...

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NASA’s Webb takes star-filled portrait of Pillars of Creation

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October 25, 2022832 Views

Near-infrared light uncovers vast populations of forming stars, many still encased in dust NASA’s James Webb Space Telescope has captured a lush, highly detailed landscape – the iconic Pillars of Creation – where new stars are forming within dense clouds of gas and dust. The three-dimensional pillars look like majestic rock formations, but are far more permeable. These columns are made up of cool interstellar gas and dust that appear – at times – semi-transparent in near-infrared light. This image of the Pillars of Creation, captured by Webb’s Near-Infrared Camera (NIRCam), shows compass arrows, scale bar, and color key for reference. It lies within the Eagle Nebula, which is also known as Messier 16 (M16). The north and east compass arrows show the orientation of the image on the s...

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Heaviest element yet detected in an exoplanet atmosphere

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October 15, 2022276 Views

Using the European Southern Observatory’s Very Large Telescope (ESO’s VLT), astronomers have discovered the heaviest element ever found in an exoplanet atmosphere — barium. They were surprised to discover barium at high altitudes in the atmospheres of the ultra-hot gas giants WASP-76 b and WASP-121 b — two exoplanets, planets which orbit stars outside our Solar System. This unexpected discovery raises questions about what these exotic atmospheres may be like. This artist’s impression shows an ultra-hot exoplanet, a planet beyond our Solar System, as it is about to transit in front of its host star. When the light from the star passes through the planet’s atmosphere, it is filtered by the chemical elements and molecules in the gaseous layer. With sensitive instruments, the signatures of...

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Black Hole spews out material years after shredding star

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October 14, 2022528 Views

Scientists say, no one has ever seen anything like this before In October 2018, a small star was ripped to shreds when it wandered too close to a black hole in a galaxy located 665 million light years away from Earth. Though it may sound thrilling, the event did not come as a surprise to astronomers who occasionally witness these violent incidents while scanning the night sky. But nearly three years after the massacre, the same black hole is lighting up the skies again — and it hasn’t swallowed anything new, scientists say. “This caught us completely by surprise — no one has ever seen anything like this before,” says Yvette Cendes, a research associate at the Center for Astrophysics | Harvard & Smithsonian (CfA) and lead author of a new study analyzing the phenomenon. Arti...

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SpaceX to take entrepreneur Dennis Tito on Starship around the moon

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October 12, 2022375 Views

Billionaire Elon Musk's SpaceX said on Wednesday that the world's first space tourist Dennis Tito and his wife Akiko have signed up to fly around the moon on the space exploration firm's Starship rocket. Engineer turned financial analyst Tito, 82, was the first private individual to pay for a trip to space on Russia's Soyuz TM-32 mission in 2001, when he spent nearly eight days aboard the International Space Station. The SpaceX flight's roughly week-long journey will see the rocket travel within 200 kilometers of the moon without landing on its surface. FILE PHOTO : Starship prototypes are pictured at the SpaceX South Texas launch site near Brownsville, Texas, U.S., May 22, 2022. REUTERS/Veronica G. Cardenas Tito and his wife are the first crewmembers to be announced for Stars...

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Potential First Traces of the Universe’s Earliest Stars

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October 2, 2022199 Views

Gemini observation of distant quasar uncovers evidence of first-generation star that died in ‘super-supernova’ explosion The very first stars likely formed when the Universe was only 100 million years old, less than one percent its current age. These first stars — known as Population III — were so titanically massive that when they ended their lives as supernovae they tore themselves apart, seeding interstellar space with a distinctive blend of heavy elements. Despite decades of diligent searching by astronomers, however, there has been no direct evidence of these primordial stars, until now. By analyzing one of the most distant known quasars using the Gemini North telescope, one of the two identical telescopes that make up the International Gemini Observatory, operated by NSF’s N...