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☆ Vera C. Rubin Observatory: World’s largest digital camera will be a ‘game-changer’ for astronomy
▼ + stars: | 2024-10-23 | by ( Jacopo Prisco | ) edition.cnn.com time to read: +11 min

CNN —On a mountaintop in northern Chile, the world’s largest digital camera is preparing to power up. The expectation is that in this way, Vera Rubin will discover about 17 billion stars and 20 billion galaxies that we’ve never seen before — and that’s only the beginning. “We’re anticipating about 10 million alerts per night coming off the telescope,” Higgs says. “The Vera Rubin Observatory will enable astronomers to map the distribution of dark matter like never before, based on how dark matter bends the path of ordinary starlight — a process known as ‘gravitational lensing,’” Kaiser explains. “After all, it was her seminal work on the detection of dark matter in spiral galaxies in the 1970s that got this pursuit going,” says Natarajan.

Persons: Vera C, —, Vera Rubin, “, Rubin, ”, Clare Higgs, Higgs, Charles Simonyi, Bill Gates, it’s, Olivier Bonin, ” Higgs, “ We’re, There’s, David Kaiser, Kaiser, ” Kaiser, Rubin Obs, Konstantin Batygin, Kate Pattle, “ Rubin, Priyamvada Organizations: CNN, Rubin, Department of Energy’s, Science, US National Science Foundation, Accelerator Laboratory, Stanford University in, Accelerator, Survey, Netflix, Massachusetts Institute of Technology, Nine, California Institute of Technology, of Physics, Astronomy, University College London, Yale University Locations: Chile, Cerro Pachón, Chilean, Santiago, Stanford University in California, California

☆ Rivers in Alaska are turning orange. It’s an ‘unexpected consequence of climate change’
▼ + stars: | 2024-05-29 | by ( Fabiana Chaparro | ) edition.cnn.com time to read: +4 min

CNN —Rivers and streams in Alaska are changing color – from a clean, clear blue to a rusty orange – because of the toxic metals released by thawing permafrost, according to a new study. Ken Hill/National Park ServiceArctic soils naturally contain organic carbon, nutrients and metals, such as mercury, within their permafrost, the study says. “It’s really an unexpected consequence of climate change.”Researchers used satellite imagery to determine when the change in color happened at different rivers and streams. In Alaska’s Arctic rivers alone reside a variety of fish that are “critical for subsistence, sport, and commercial fisheries,” researchers wrote. Poulin said local communities voiced their concerns and observations to study researchers beginning seven years ago.

Persons: CNN —, “ We’re, ”, Brett Poulin, Ken Hill, Poulin, “ It’s Organizations: CNN, National Park Service, University of California, Geological Survey, Communications, Environment, UC Davis, Park Service, Water Resources Research Locations: CNN — Rivers, Alaska, Davis, Alaska’s, California, Appalachia, Alaska's Gates, Alaska’s Gates, Park Service Alaska, Chilean, Spain

☆ ‘Old smoker’ stars revealed at the heart of the Milky Way
▼ + stars: | 2024-01-30 | by ( Ashley Strickland | ) edition.cnn.com time to read: +6 min

CNN —A decade-long survey of the night sky has revealed a mysterious new type of star astronomers are referring to as an “old smoker.”These previously hidden stellar objects are aging, giant stars located near the heart of the Milky Way galaxy. This illustration shows an eruption occurring in the swirling disk of matter around a newborn star. They help the newborn star in the middle to grow, but make it harder for planets to form. Infrared images show a red giant star, located 30,000 light years away near the center of the Milky Way. Understanding how the old smokers release elements into space could change the way astronomers think about the way such elements are distributed across the universe.

Persons: Philip Lucas, Lucas, ”, Zhen Guo, Fondecyt, Guo, ” Guo, ” Lucas, Dante Minniti Organizations: CNN, Royal Astronomical Society, Astronomers, Survey, Cerro Paranal Observatory, Southern, University of Hertfordshire, University of Valparaiso, University of Hertfordshire Red, NASA, Andrés Bello University Locations: Chilean Andes, Cerro, Chile

☆ Where This Summer Was Relentlessly Hot
▼ + stars: | 2023-10-09 | by ( Zach Levitt | Elena Shao | ) www.nytimes.com time to read: +5 min

Where This Summer Was Relentlessly Hot The planet just experienced its hottest months on record, and by a large margin, scientists said. Some areas, including northern Canada and some of Greenland, show temperatures more than 6 degrees Fahrenheit (3.3 degrees Celsius) above average. Phoenix, which is known for its extreme heat, shows temperatures more than 2 degrees Fahrenheit (1.1 degrees Celsius) above average. The global map spins to South America, where average daily temperatures were higher than normal for much of the continent. Areas of Sudan and Ethiopia show temperatures greater than 6 degrees Fahrenheit (3.3 degrees Celsius) higher than normal.

Organizations: Phoenix, El, Democratic Locations: North America, Canada, Mexico, Greenland, United States, El Paso, Texas, Louisiana, Baton Rouge, La, Chilean, America, Paraguay, Europe, Croatia, Switzerland, Marseille, France, Spain, Romania, Africa, Sudan, South Sudan, Democratic Republic of Congo, East, Ethiopia, China, Turpan, Mongolia

☆ Climate change and El Niño have left parts of South America sweltering under a heat wave -- in the middle of winter
▼ + stars: | 2023-08-04 | by ( Sophie Tanno | ) edition.cnn.com time to read: +5 min

CNN —Parts of South America are sweltering under abnormally hot temperatures – despite being in the depths of winter – as the combination of human-caused climate change and the arrival of El Niño feed into extreme winter heat. “This temperature is the highest recorded in this period in all of Chile,” a spokesperson for the Meteorological Directorate of Chile told CNN. Ivan Alvarado/ReutersIn Argentina, some places reached highs of 38 degrees Celsius (100.4), according to the country’s national meteorological service. This smashed the previous record for that day of 24.6 degrees Celsius (76.3 Fahrenheit) set in 1942. For comparison, New Orleans’ average high the first week of February is also 18 degrees Celsius, and the city has never been above 28.3 degrees Celsius in the first week of February.

Persons: Maximiliano Herrera, ” Herrara, ”, Maisa Rojas, Hace, Ayer, 🥵🌎, jcHZq7vL — Organizations: CNN, Northern Locations: South America, Chile, Argentina, America, Southern

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