अंतरिक्ष विज्ञान – Page 4 – आवारा मुसाफिर

Stunning star nursery is latest JWST image to amaze astronomers

July 13, 2023789 Views

The stunning picture of the star-forming region closest to Earth is the latest to be released by the James Webb Space Telescope (JWST). NASA unveiled the image to mark one year since the landmark telescope released its first photograph. The first anniversary image from NASA’s James Webb Space Telescope displays star birth like it’s never been seen before, full of detailed, impressionistic texture. It shows an area in the Rho Ophiuchi cloud complex, 120 parsecs (390 light years) away, that contains roughly 50 young stars — most of which have masses similar to, or less than, that of the Sun. It is the closest star-forming region to Earth. The vertical and horizontal red streaks on the upper and right-hand side of the image are molecular hydrogen illuminated by jets of material produce...

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One of the world’s largest telescope is now half completed

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July 11, 20231126 Views

ESO’s ground based ELT is located atop Cerro Armazones in Chile’s Atacama Desert The European Southern Observatory’s Extremely Large Telescope (ESO’s ELT) is a revolutionary ground-based telescope that will have a 39-metre main mirror and will be the largest telescope in the world for visible and infrared light: the world’s biggest eye on the sky. Construction of this technically complex project is advancing at a good pace, with the ELT now surpassing the 50% complete milestone. This image, taken in late June 2023, shows a webcam image of the construction site of ESO’s Extremely Large Telescope at Cerro Armazones, in Chile's Atacama Desert. The starry background is dominated by the core of the Milky Way, our home galaxy, and the Large and Small Magellanic clouds, two dwarf galaxies ...

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Early Universe ran in extreme slow motion!

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July 3, 2023808 Views

Quasar ‘clocks’ show it was five times slower soon after the Big Bang Scientists have for the first time observed the early universe running in extreme slow motion, unlocking one of the mysteries of Einstein’s expanding universe. Einstein’s general theory of relativity means that we should observe the distant – and hence ancient – universe running much slower than the present day. However, peering back that far in time has proven elusive. Scientists have now cracked that mystery by using quasars as ‘clocks'. “Looking back to a time when the universe was just over a billion years old, we see time appearing to flow five times slower,” said lead author of the study, Professor Geraint Lewis from the School of Physics and Sydney Institute for Astronomy at the University of Sydney. ...

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With neutrinos, scientists observe our galaxy in a whole new way

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June 30, 2023780 Views

Human beings for millennia have gazed with awe at the vast torrent of stars - bright and dim - shining in Earth's night sky that comprise the Milky Way. Our home galaxy, however, is now being observed for the first time in a brand new way. Scientists said on Thursday they have produced an image of the Milky Way not based on electromagnetic radiation - light - but on ghostly subatomic particles called neutrinos. They detected high-energy neutrinos in pristine ice deep below Antarctica's surface, then traced their source back to locations in the Milky Way - the first time these particles have been observed arising from our galaxy. An artist's composition of the Milky Way seen with a neutrino lens (blue) is shown in this undated handout image. Collaboration/U.S. National Science Founda...

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Virgin Galactic rocket plane poised for first commercial flight to edge of space

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June 29, 2023761 Views

A twin-fuselage jet stood ready on Thursday to carry a Virgin Galactic rocket plane with a three-man crew from Italy into the New Mexico sky for a high-altitude launch of the company's first flight of paying customers to the edge of space. The two Italian air force colonels and an aerospace engineer from the National Research Council of Italy were due to join their Virgin Galactic instructor and the spaceplane's two pilots on a suborbital ride expected to take the six men about 50 miles (80 km) above the desert floor. The flight marks a decisive moment for Virgin Galactic Holding Inc, the space tourism venture founded by British billionaire Richard Branson in 2004, as it inaugurates commercial service following several years fraught with development setbacks. FILE PHOTO: Virgin G...

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‘Smiling cat’ nebula captured in new ESO image

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June 27, 20231701 Views

The Sh2-284 stellar nursery is a vast region of dust and gas and its brightest part, visible in the image, is about 150 light-years (over 1400 trillion kilometers) across. It’s located some 15 000 light-years away from Earth in the constellation Monoceros. This spectacular picture of the Sh2-284 nebula has been captured in great detail by the VLT Survey Telescope at ESO’s Paranal Observatory. Sh2-284 is a star formation region, and at its centre there is a cluster of young stars, dubbed Dolidze 25. The radiation from this cluster is powerful enough to ionise the hydrogen gas in the nebula’s cloud. It is this ionisation that produces its bright orange and red colours. This image is part of the VST Photometric Hα Survey of the Southern Galactic Plane and Bulge, led by Janet Drew at the U...

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Scientists document how space travel messes with the human brain

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June 10, 2023595 Views

Space can be an unfriendly place for the human body, with microgravity conditions and other factors tampering with our physiology, from head to toe - head, of course, being a primary concern. A new NASA-funded study provides a deeper understanding of the issue. Researchers said on Thursday that astronauts who traveled on the International Space Station (ISS) or NASA space shuttles on missions lasting at least six months experienced significant expansion of the cerebral ventricles - spaces in the middle of the brain containing cerebrospinal fluid. This colorless and watery fluid flows in and around the brain and spinal cord. It cushions the brain to help protect against sudden impact and removes waste products. Based on brain scans of 30 astronauts, the researchers found that it t...

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First ever Mars livestream interrupted at times by rain on Earth

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June 4, 20231163 Views

A European spacecraft around Mars sent its first livestream from the red planet to Earth on Friday to mark the 20th anniversary of its launch, but rain in Spain interfered at times. The European Space Agency broadcast the livestream with views courtesy of its Mars Express, launched by a Russian rocket from Kazakhstan in 2003. It took nearly 17 minutes for each picture to reach Earth, nearly 200 million miles (300 million kilometers) away, and another minute to get through the ground stations. This image provided by the European Space Agency and taken with the ESA's High Resolution Stereo Camera (HRSC) aboard the Mars Express spacecraft shows Mars as the spacecraft approaches the planet from a distance of 5.5 million kilometers. Launched in 2003, the spacecraft marked it's 20th an...

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Hidden views of vast stellar nurseries revealed

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May 12, 2023727 Views

Astronomers pierce together more than one million images using ESO telescope Using ESO’s Visible and Infrared Survey Telescope for Astronomy (VISTA), astronomers have created a vast infrared atlas of five nearby stellar nurseries by piecing together more than one million images. These large mosaics reveal young stars in the making, embedded in thick clouds of dust. Thanks to these observations, astronomers have a unique tool with which to decipher the complex puzzle of stellar birth. This image shows the L1688 region in the Ophiuchus constellation. New stars are born in the colourful clouds of gas and dust seen here. The infrared observations underlying this image reveal new details in the star-forming regions that are usually obscured by the clouds of dust. Credit:ESO/Meingast et a...

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Virgin Galactic to start commercial tourism spaceflight in late June

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May 8, 2023629 Views

Space-tourism company Virgin Galactic Holdings said on Monday that a four-member test flight will take place in May and that it aims to launch its first commercial flight in late June. Shares jumped 4% after the company said the May mission would be the final test of the spaceflight system and astronaut experience before it opens up for commercial services. FILE PHOTO: Richard Branson and Virgin Galactic crew members enter the company's passenger rocket plane, the VSS Unity, in a still image from undated handout video taken at Spaceport America near Truth or Consequences, New Mexico, U.S. Virgin Galactic/Handout via REUTERS. The company, backed by billionaire Richard Branson, had in May last year delayed its commercial service to the first quarter of 2023 due to supply-chain cris...