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Search resuls for: "Telescope"


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☆ Scientists identify polar cyclone swirling on mysterious Uranus
  + stars: | 2023-05-25 | by ( Will Dunham | ) www.reuters.com   time to read: +4 min
[1/2] NASA scientists uses microwave observations to spot the first polar cyclone on Uranus, seen here as a light-colored dot to the right of center in each image of the planet, in this handout image released on May 25, 2023. But new observations from a telescope located in New Mexico are providing a fuller understanding of its atmosphere, including the detection of a polar cyclone whose center measures a quarter of Earth's diameter, swirling near its north pole. Scientists were able to gaze more deeply into the atmosphere of Uranus - a planet classified as an ice giant, like its planetary neighbor Neptune - than ever before. The research confirmed that polar cyclones are present on every body in our solar system with a substantial atmosphere - all the planets but Mercury and even Saturn's moon Titan. "The way they form is different from planet to planet," Akins added.
☆ Solar telescope’s images reveal the sun’s surface like never before
  + stars: | 2023-05-25 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +4 min
CNN —New images of the sun’s surface captured by a powerful ground-based solar telescope have revealed sunspots and other features in unprecedented detail. The eight images, released on May 19, were taken using the National Science Foundation’s Daniel K. Inouye Solar Telescope, a 4-meter (13.1-foot) telescope located on the island of Maui in Hawaii. Although the sun is becoming increasingly active as the July 2025 solar maximum — the peak of the sun’s 11-year cycle — draws closer, the photos showcase the quieter aspects of the solar surface. Bright hot plasma flows upward on the sun’s surface, while darker, cooler plasma flows down. NSF/AURA/NSOThe Inouye Solar Telescope also glimpsed “light bridges,” bright solar features that span the darkest region of a sunspot.
☆ Creepy close-up images of the sun reveal yarn-like strands, dark pores, and a 'light bridge' crossing a decaying sunspot
  + stars: | 2023-05-24 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com   time to read: +6 min
The sun looks spooky and mysterious in new images from the world's most powerful solar telescope. The Daniel K. Inouye Solar Telescope has been observing the sun from the Hawaiian island of Maui since it first opened in 2020. Its first video, below, showed roiling solar plasma, each cell the size of Texas. Dark "pores" on the solar surface indicate powerful magnetic fields, which are likely driving the dark threads visible in the atmosphere above. The bright yellow surface plasma cools until its density is so low that it drops below the surface, through the dark lanes between cells.
☆ A sunspot four times the size of Earth is visible right now — here's how to see it without a telescope
  + stars: | 2023-05-23 | by ( Marianne Guenot | ) www.businessinsider.com   time to read: +4 min
A sunspot four times the size of the Earth is crossing the sun right now. "A giant sunspot is crossing the sun's disk, and I could see it clearly with solar glasses," said Yeom, per spaceweather.com, adding: "Caution! The sun is gearing up to a peak of activityA video of the sun taken on May 18 shows a powerful solar flare being released. SDO/NASAExperts have been keeping a watchful eye on this particular sunspot, called AR3310, while it is facing the Earth. As this one rolled around the side of the sun, it let off a substantial solar flare, a giant explosion that sends energy, light, and high-speed particles into space.
☆ Stunning photos of the night sky in one of the darkest places on Earth will make you want to visit New Zealand ASAP
  + stars: | 2023-05-20 | by ( Rebecca Strong | ) www.businessinsider.com   time to read: +9 min
The Aoraki Mackenzie International Dark Sky Reserve is especially great for star gazing. But in one of the darkest places on Earth — the Aoraki Mackenzie International Dark Sky Reserve in New Zealand — that's not an issue. Aoraki is the second-largest dark sky reserve in the world, ranking at a level 2 on the nine-level Bortle Dark-Sky Scale for light pollution. The Aoraki Mackenzie International Dark Sky Reserve is located in southern New Zealand. Igor HoogerwerfAccording to Jason Menard, an executive at Mackenzie Tourism, The Aoraki Mackenzie International Dark Sky Reserve is one of the best places to view the Milky Way — and that's pretty evident in this photo.
☆ When the Culture Wars Came for NASA
  + stars: | 2023-05-19 | by ( Michael Barbaro | Will Reid | Mooj Zadie | ) www.nytimes.com   time to read: 1 min
The James Webb Space Telescope, the most powerful ever made, has revolutionized the way we see the universe. The name was chosen for James E. Webb, a NASA administrator during the 1960s. But when doubts about his background emerged, the telescope’s name turned into a fight over homophobia. Michael Powell, a national reporter for The Times, tells the story of Dr. Hakeem Oluseyi, an astrophysicist whose quest to end the controversy with indisputable facts only made it worse.
☆ Earth-sized alien planet gripped by widespread volcanism
  + stars: | 2023-05-17 | by ( Will Dunham | ) www.reuters.com   time to read: +4 min
In our solar system, Earth and Venus are volcanically active, as are some of Jupiter's moons. Planets beyond our solar system are called exoplanets. Here, water from the nightside glacier can melt and possibly form liquid surface water. In addition, there is likely volcanism all around the planet, even under the ice on the nightside and possibly under the water near the terminator," Benneke said. The planet is located in the Milky Way about 86 light-years away from our solar system in the direction of the constellation Crater.
☆ Earth-size exoplanet may be covered in volcanoes
  + stars: | 2023-05-17 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +6 min
Instead, the exoplanet, called LP 791-18 d, is likely covered in volcanoes and may experience eruptions with the same frequency as Jupiter’s moon Io, the most volcanically active place in our solar system, according to researchers. LP 791-18 d is located about 90 light-years from Earth in the Crater constellation, where it orbits a small red dwarf star. And astronomers believe the massive planet LP 971-18 c might be contributing to the newly detected exoplanet’s possible volcanism. As the two objects orbit their star, LP 971-18 c and the newfound exoplanet LP 791-18 d closely pass each other, allowing the gravitational pull of the larger planet LP 971-18 c to tug on planet d and reshape its orbit. The discovery of LP 971-18 d points to the importance of data collected by space telescopes.
☆ A 'Da Vinci glow' casts a ghostly shine on the moon this week. Here's when to catch it.
  + stars: | 2023-05-16 | by ( Chris Panella | Morgan Mcfall-Johnsen | ) www.businessinsider.com   time to read: +3 min
The "Da Vinci glow" phenomenon will be visible on the moon this week. Here are the best days and times to see the "Da Vinci glow," according to Live Science. The phenomenon is known as the "Da Vinci glow," or "Earthshine." Thanks to the "Da Vinci glow," however, you can see the entire moon as a faint glimmer. When to see the Da Vinci glow on the moonThe new moon on Friday will be practically invisible, lost in the sun's glare, so plan to catch the Da Vinci glow before or after that.
☆ Webb telescope spots water in rare comet
  + stars: | 2023-05-15 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +5 min
CNN —Astronomers used the James Webb Space Telescope to observe a rare comet in our solar system, making a long-awaited scientific breakthrough and stumbling across another mystery at the same time. For the first time, water was detected in a main belt comet, or a comet located in the main asteroid belt between the orbits of Mars and Jupiter. The space observatory detected water vapor around Comet Read, which suggests that water ice can be preserved in a warmer part of the solar system. It’s possible that the warmer temperatures of the main asteroid belt cause Comet Read to lose its carbon dioxide over time, the researchers said. Comet Read might have also formed in a warmer pocket of the solar system without carbon dioxide, Kelley said.
☆ Astronomers spot the biggest cosmic explosion ever seen, and it's 100 times the size of our solar system
  + stars: | 2023-05-12 | by ( Marianne Guenot | ) www.businessinsider.com   time to read: +6 min
This enormous fireball, which is about 8 billion light years away, is approximately 100 times bigger than the solar system. While it's not the brightest flash ever seen, it is "by far the most energy released" from a single explosion, Wiseman added. This may be a black hole slurping up a cloud of gas and dustThe world's first picture of a black hole, unrelated to this story. One theory is that explosions could emerge from the black hole to stop gas from falling into the black hole. Right now, the explosion is so bright that it's not possible to see a galaxy around the black hole.
☆ The Biggest Explosion in the Cosmos Just Keeps Going
  + stars: | 2023-05-12 | by ( Dennis Overbye | ) www.nytimes.com   time to read: +1 min
Not two weeks ago, on May 3, astronomers reported observing a star that was in the process of swallowing one of its own planets. Just two days earlier, another team had described black holes that were ripping stars apart and consuming them in a process known as tidal disruption event, or T.D.E. Now an international group of astronomers reports that it is observing one of the most violent and energetic acts of cosmic cannibalism ever witnessed, perhaps the biggest explosion seen yet in the history of the universe. A study of the phenomenon appeared Friday in Monthly Notices of the Royal Astronomical Society. Most supernovas fade after a few weeks; this one, known as AT2021lwx, kept going — and has continued to explode for three years now.
☆ Google is bringing an AI chatbot to search results. Here's what it's like
  + stars: | 2023-05-10 | by ( Samantha Murphy Kelly | ) edition.cnn.com   time to read: +6 min
With the update, the look and feel of Google Search results will be noticeably different. Users can now sign up for a waitlist for the new Google Search, which will first launch in the United States, via the Google app or Chrome’s desktop browser. The new Google Search also offers a Perspectives feature to showcase what other people are buying or thinking about, and factoring that into results. Like ChatGPT, the new Google Search and Bard are built on a large language model. Google previously told CNN that Bard would serve as a separate, complementary experience to Google Search, and planned to “thoughtfully” add large language models to search “in a deeper way” at a later time.
☆ What Survives in the Atacama Desert?
  + stars: | 2023-05-10 | by ( Maggie Shipstead | Anthony Cotsifas | Photographs | ) www.nytimes.com   time to read: +3 min
Its Very Large Telescope is perched at 8,645 feet atop an explosive-flattened mountaintop, where the atmosphere is relatively stable and incredibly dry. is building a new telescope, the Extremely Large Telescope, which will be used for, among other purposes, hunting for exoplanets that might support life. On my way back to the residencia, I stopped and looked up at the billowing arch of the Milky Way. The Atacama, for all its emptiness, is not a void. The desert, in its dryness, keeps the dead and opens the sky.
☆ Webb telescope spies evidence of hidden planets around nearby star
  + stars: | 2023-05-08 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +5 min
The revelation of the Fomalhaut’s two inner rings has suggested that planets hidden deeper within the star system may be affecting the dust belt’s shape. Stars form from gas and dust, and then a ring of leftover material called a protoplanetary disk orbits the star, where planets are born. Once the planets form around a star, debris belts form and become shaped by the gravity of the planets. Studying the dust belts can help unlock more of the secrets behind how planetary systems form. “I think it’s not a very big leap to say there’s probably a really interesting planetary system around the star.”
☆ Webb Telescope Finds a Star Cloaked in 3 Rings of Ruined Worlds
  + stars: | 2023-05-08 | by ( Robin George Andrews | ) www.nytimes.com   time to read: +1 min
Fomalhaut, a star just 25 light-years away, is so dazzlingly bright that it blots out the faint light of other stars around it. Stargazers have been enraptured by its secrets for thousands of years. Now, with the help of the James Webb Space Telescope, astronomers have documented evidence that Fomalhaut is a dynamic star wreathed in cosmic chaos. The powerful observatory’s infrared vision is letting astronomers better understand Fomalhaut’s features, including a mysterious ring unlike anything found in our solar system. “It’s the first time we’ve seen such structures in an evolved system.”The findings could contribute to the solution to an existential puzzle: How weird, or ordinary, is our solar system?
☆ Scientists used DNA to unlock who wore a 25,000-year-old pendant
  + stars: | 2023-05-06 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +6 min
Max Planck Institute for Evolutionary AnthropologyA deer tooth pendant has revealed details about the woman who wore it between 19,000 and 25,000 years ago. The groundbreaking analysis by a team of European researchers marks the first time scientists have successfully isolated ancient human DNA from a Stone Age artifact. Gregory BretonWith large ears and adorable faces, sand cats went viral seven years ago when their kittens were photographed in the wild for the first time. Although smaller than domestic cats, sand cats live in harsh environments with scorching heat, hunt venomous Saharan horned vipers and rely on blood from prey as a source of water. To unravel the many mysteries of sand cats, researchers tracked 22 of the felines that had been fitted with radio collars for four years.
☆ The Eta Aquarids meteor shower is peaking, giving you the chance to see up to 40 shooting stars an hour. Here's how to watch.
  + stars: | 2023-05-05 | by ( Marianne Guenot | ) www.businessinsider.com   time to read: +6 min
The Eta Aquarids meteor shower is due to peak May 5, offering up to 40 shooting stars per hour. The dazzling display is known as the Eta Aquarids and takes place in May each year when Earth travels through debris left behind by Halley's Comet. The meteor shower is active this year from between April 15 to May 27, but it is expected to peak on May 5. NASAThe Eta Aquarids are one of the few showers that favor the Southern Hemisphere. So you will have to wait over 20 years to see another Eta Aquarids outburst," he added.
☆ The International Space Station is hiding in this mind-blowing photo, as it passes the sun. Can you spot it?
  + stars: | 2023-05-04 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com   time to read: +7 min
The International Space Station passes the sun in a gorgeous portrait by photographer Andrew McCarthy. Can you spot the space station in this portrait of an increasingly active sun? It erupts high-energy radiation into space, some of which slams into the International Space Station rocketing around Earth. The space station zips across the sun like a fast-moving needle in a haystackMcCarthy's multi-telescope setup to capture his photo of the space station crossing the sun. He used the sunspots as a visual cue, knowing the space station would pass in front of them.
☆ Astronomers observe star swallowing planet for first time
  + stars: | 2023-05-03 | by ( Jack Guy | ) edition.cnn.com   time to read: +4 min
CNN —In a world first, scientists have observed the moment that a dying star consumed a planet — a fate that eventually awaits Earth. Astronomers observed this as a white-hot flash, followed by a longer-lasting colder signal, which they later deduced was caused by the star engulfing a planet. “That infrared data made me fall off my chair,” De said, with the readings suggesting the star could have been merging with another star. However, further analysis using readings from NASA’s infrared space telescope, NEOWISE, revealed that the star was in fact consuming a planet. Our own planet will meet the same fate, but not for 5 billion years, researchers say.
☆ Astronomers spot a sneak peek of Earth's death — a star swallowing a planet whole — for the first time
  + stars: | 2023-05-03 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com   time to read: +7 min
Astronomers discovered a distant star swallowing a planet for the first time ever. Swallowing the planet whole produced a burst of energy that expelled the star's outer layers, causing it to expand and brighten rapidly. Except for a veneer of dust, the star pretty much looked the same as it had before, one year after devouring its planet. The distant planet that just got absorbed by its star was about the size of Jupiter, which is more than 1,300 Earths. (It later turned out, this pre-eruption dust was material from the planet skimming the atmosphere of the star as it orbited closer and closer.)
☆ It’s the End of a World as We Know It
  + stars: | 2023-05-03 | by ( Becky Ferreira | ) www.nytimes.com   time to read: +2 min
Small stars, like red dwarfs, may shine for trillions of years, whereas the most massive stars explode just a few million years after their births. The light of some stars is polluted with the chemical signatures of planets, suggesting that whole worlds are being digested before our eyes. Those images revealed a star chilling at about 5,000 degrees Fahrenheit, about 10 times colder than the searing temperatures expected from red novas. Puzzled, Dr. De and his colleagues observed the star again, this time in infrared light, using another camera at the Palomar Observatory and NASA’s NEOWISE space telescope. It dawned on the researchers that they were most likely watching a star gulping down a planet in real time.
☆ Webb telescope detects mysterious water vapor in a nearby star system
  + stars: | 2023-05-02 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +5 min
CNN —The James Webb Space Telescope has detected water vapor around a rocky exoplanet that orbits a star located 26 light-years away from Earth. The presence of water vapor could suggest that GJ 486 b somehow has an atmosphere, despite its heat and proximity to the star. “Water vapor in an atmosphere on a hot rocky planet would represent a major breakthrough for exoplanet science. The results from the Webb data analysis pointed to water vapor being present around GJ 486 b. Future observations of the planet using different instruments on the Webb telescope could reveal additional details about the source of the water vapor.
☆ Back Then, Baby Galaxies. Next, a Super-Mega Galactic Cluster?
  + stars: | 2023-04-29 | by ( Dennis Overbye | ) www.nytimes.com   time to read: +1 min
Like basketball scouts discovering a nimble, super-tall teenager, astronomers using the James Webb Space Telescope reported recently that they had identified a small, captivating group of baby galaxies near the dawn of time. These galaxies, the scientists say, could well grow into one of the biggest conglomerations of mass in the universe, a vast cluster of thousands of galaxies and trillions of stars. The seven galaxies they identified date to a moment 13 billion years ago, just 650 million years after the Big Bang. He described the proto-cluster as the most distant and thus earliest such entity yet observed. Dr. Morishita was the lead author of a report on the discovery, which was published on Monday in The Astrophysical Journal Letters.
☆ The Eta Aquarids meteor shower is about to peak, giving you the chance to see up to 40 shooting stars an hour. Here's how to watch.
  + stars: | 2023-04-28 | by ( Marianne Guenot | ) www.businessinsider.com   time to read: +6 min
The Eta Aquarids meteor shower is due to peak May 5, offering up to 40 shooting stars per hour. If you're heading out to see the display, here are NASA's top tips for getting the best look. The meteor shower is active this year from between April 15 to May 27, but it is expected to peak on May 5. NASAThe Eta Aquarids are one of the few showers that favor the Southern Hemisphere. So you will have to wait over 20 years to see another Eta Aquarids outburst," he added.
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