अंतरिक्ष विज्ञान – Page 12 – आवारा मुसाफिर

Blue Origin delays space launch, ‘SNL’ star Davidson won’t go

March 19, 2022426 Views

Jeff Bezos' Blue Origin space tourism service has postponed until March 29 a flight initially set for next week, while "Saturday Night Live" comic Pete Davidson will not be a passenger on the launch, the company has said. The company, in a brief notice first posted on Twitter, gave no immediate explanation for the change or Davidson's withdrawal from the manifest of Blue Origin's fourth commercial flight since last summer. Davidson, 28, the boyfriend of reality TV star and socialite Kim Kardashian, had just been officially named on Monday as Blue Origin's "honorary guest" to join five paying customers on the flight initially set for March 23. With "Davidson no longer able to join" the new flight, Blue Origin said it would announce the sixth crew member "in the coming days." ...

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Blue Origin to fly ‘SNL’ star Pete Davidson to space next week

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March 15, 2022744 Views

"Saturday Night Live" comic Pete Davidson has been confirmed as the next celebrity in line for a ride to the edge of space courtesy of Jeff Bezos' Blue Origin astro-tourism company, with his suborbital flight set for next week. The 28-year-old comedian and boyfriend of socialite and reality TV star Kim Kardashian was announced by Blue Origin on Monday as an "honorary guest" joining five paying customers for the company's fourth commercial flight since last summer. FILE PHOTO: An interior view of the Blue Origin Crew Capsule mockup at the 33rd Space Symposium in Colorado Springs, Colorado, United States April 5, 2017. REUTERS/Isaiah J. Downing Davidson, who had no immediate comment on his selection, was reported to have been in discussions with Blue Origin earlier this month. H...

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Stellar ‘vampire’ finds love at first bite with companion star

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March 3, 2022775 Views

“Closest black hole” system found to contain no black hole Astronomers have gotten a good look at what happens when a "vampire" star sucks the outer layers of material from a companion star, stripping this "bitten" victim down to a mere stellar core. In 2020 a team led by European Southern Observatory (ESO) astronomers reported the closest black hole to Earth, located just 1000 light-years away in the HR 6819 system. But the results of their study were contested by other researchers, including by an international team based at KU Leuven, Belgium. In a paper published on Wednesday, these two teams have united to report that there is in fact no black hole in HR 6819, which is instead a “vampire” two-star system in a rare and short-lived stage of its evolution. The original study on...

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Spanish Dancer Galaxy twirls into view

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February 27, 2022962 Views

NSF’s NOIRLab in Chile captures stunning image through Dark Energy Camera Located in the constellation Dorado and lying around 70 million light-years away, NGC 1566 is a grand-design spiral galaxy with two arms that appear to wind around the galactic core, just like the arms of a dancer as they spin around and around in a furious twirl. This image was taken from Chile at the Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF’s NOIRLab, using the Dark Energy Camera. The galaxy's face-on view to us, its location, and its composition make it a trove of observational opportunities for astronomers across many fields of astronomy. This image, taken by astronomers using the US Department of Energy-fabricated Dark Energy Camera on the Víctor M. Blanco 4-meter Telescope at Cerr...

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Where on Earth did the water come from?

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February 16, 2022931 Views

Earth’s supply of water is incredibly important for its ability to sustain life, but where did that water come from? Was it present when Earth formed or was it delivered later by meteorites or comets from outer space? The source of Earth’s water has been a longstanding debate and Lawrence Livermore National Laboratory (LLNL) scientists think they have the answer—and they found it by looking at rocks from the moon. Evidence from the analysis of lunar samples suggest that although the Earth and moon formed from a giant impact, they mostly retained their primordial abundances of volatile elements including water. Image by Adam Connell/LLNL. Since the Earth-moon system formed together from the impact of two large bodies very early in solar system history, their histories are very muc...

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New planet detected around star closest to the Sun

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February 12, 2022750 Views

A team of astronomers using the European Southern Observatory’s Very Large Telescope (ESO’s VLT) in Chile have found evidence of another planet orbiting Proxima Centauri, the closest star to our Solar System. This candidate planet is the third detected in the system and the lightest yet discovered orbiting this star. At just a quarter of Earth’s mass, the planet is also one of the lightest exoplanets ever found. “The discovery shows that our closest stellar neighbour seems to be packed with interesting new worlds, within reach of further study and future exploration,” explains João Faria, a researcher at the Instituto de Astrofísica e Ciências do Espaço, Portugal and lead author of the study published today in Astronomy & Astrophysics. Proxima Centauri is the closest star to the Su...

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Volcano in Costa Rica shows how life might have existed on Mars

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January 31, 2022616 Views

Extremely harsh volcanic lake is dominated by bacteria from a single 'extremophile' genus A few specialist microbes survive conditions analogous to those of Mars’ early history, reports a new publication in Frontiers in Astronomy and Space Science—and this may be thanks to a broad range of adaptations. The hydrothermal crater lake of the Poás volcano in Costa Rica is one of the most hostile habitats on the planet. The water is ultra-acidic, full of toxic metals and the temperatures range from comfortable to boiling. In addition, recurrent ‘phreatic eruptions’ cause sudden explosions of steam, ash and rock. Despite such deadly eruptions, hydrothermal environments may be where the earliest forms of life began on Earth—and potentially also on Mars, if there ever was life. Beyond discov...

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Scientists amazed by blinking star’s ‘totally unexpected’ behavior

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January 28, 2022246 Views

Scientists have detected what appears to be an incredibly dense star behaving unlike anything else ever seen - and suspect it might be a type of exotic astrophysical object whose existence has until now been only hypothesized. The object, spotted using the Murchison Widefield Array telescope in outback Western Australia, unleashed huge bursts of energy roughly three times per hour when viewed from Earth during two months in 2018, the researchers said. An artist's impression of an object located roughly 4,200 light years from our solar system that may be a type of neutron star - the dense, collapsed core of a massive star that exploded as a supernova - called a magnetar, in this handout image obtained January 27, 2022. The object was detected using the Murchison Widefield Array teles...

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Capturing All That Glitters in Galaxies with NASA’s Webb

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January 22, 2022321 Views

An international research team will survey the stars, star clusters, and dust that lie within 19 nearby galaxies Spirals are some of the most captivating shapes in the universe. They appear in intricate seashells, carefully constructed spider webs, and even in the curls of ocean waves. Spirals on cosmic scales – as seen in galaxies – are even more arresting, not only for their beauty, but also for the overwhelming amount of information they contain. How do stars and star clusters form? Until recently, a complete answer used to lie out of reach, blocked by gas and dust. Within the first year of operations, NASA’s James Webb Space Telescope will help researchers complete a more detailed sketch of the stellar life cycle with high-resolution infrared-light images of 19 galaxies. FILE PH...

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Second alien moon identified is much like the first: big and strange

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January 13, 2022529 Views

For only the second time, astronomers have detected what appears to be a moon orbiting a planet in another solar system. Just like the first time, this one has traits suggesting that such moons may differ greatly from those populating our solar system. Data obtained by NASA's Kepler space telescope before it was retired in 2018 indicated the presence of a moon 2.6 times the diameter of Earth orbiting a Jupiter-sized gas giant about 5,700 light-years away from our solar system in the direction of the Cygnus and Lyra constellations, scientists said on Thursday. A light-year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km). An artist's rendering shows a moon with a diameter roughly 2.6 times that of Earth orbiting a large gas giant planet in another sola...