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☆ Kessler Syndrome: Space junk is clouding Earth’s orbit. Is it past the point of no return?
▼ + stars: | 2024-12-27 | by ( Jackie Wattles | ) edition.cnn.com time to read: +16 min

“So we are heading towards the situation that we are always dreading.”The event Reddy referred to is a hypothetical phenomenon called Kessler Syndrome. Named for American astrophysicist Donald Kessler and based on his 1978 academic paper, Kessler Syndrome — as the term is used today — has a muddy definition. Given that “Kessler Syndrome” is not an instantaneous event, scientists are debating whether the phenomenon could already be in motion. The researchers interviewed for this story offered differing perspectives on whether events indicative of Kessler Syndrome had already kicked off. But Frueh said that’s why she no longer believes Kessler Syndrome is a useful term.

Persons: ”, Vishnu Reddy, Reddy, Donald Kessler, Kessler, J . Mai, Bob Hall, fleck, Alan Dyer, VWPics, Carolin Frueh, Frueh, Purdue’s Frueh, “, ” Frueh, Thomas Berger, Berger, Dan Oltrogge, “ Kessler, Dr, Nilton, Renno, Arizona’s Reddy Organizations: CNN, Space Station, NASA, University of Arizona, European Conference, European Space Agency, ESA, US, Iridium, US Air Force, COMSPOC Corp, Space Shuttle Challenger, astronautics, Purdue University in, GEO, University of Colorado’s, Weather Technology, Research, Education, Space Standards, University of Michigan, Companies, Systems, GmbH, ION, United Nations, University Locations: Tucson, Darmstadt, Germany, United States, Russia, India, China, Russian, Purdue University in Indiana, Washington ,

☆ Earth's orbit is so crowded that space traffic controllers issue more than 1,000 collision warnings per day
▼ + stars: | 2024-12-25 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com time to read: +6 min

Space junk has filled up so much of Earth's orbit that it's endangering satellites and astronauts. Along with those recognizable objects, there are millions of bits of debris in orbit traveling faster than a bullet. NASAEarth's orbit is so crowded with junk now that roughly 1,000 warnings about possible impending collisions go out to satellite operators each day, Berger said. A projectile strikes a mock-up of a spacecraft in a NASA-Air Force test meant to simulate space debris collisions. Advertisement"That would've been a hypervelocity impact creating thousands of pieces of debris," Berger said.

Persons: Thomas Berger, Berger, Araz, Siamak, It's, Kessler, Space.com, Daniel Baker, Baker Organizations: American Geophysical Union, Washington DC, NASA, US Space Force, Weather Technology, Research, Education Center, University of Colorado, Air Force, Arnold Engineering, Force, Space, SpaceX, Atmospheric, Physics, UC Boulder, Congress, FCC Locations: Washington, Russian, University of Colorado , Boulder, American, Russia, China, India

☆ SpaceX’s Polaris Dawn mission just made history. But the riskiest part is still to come
▼ + stars: | 2024-09-10 | by ( Jackie Wattles | ) edition.cnn.com time to read: +5 min

CNN —SpaceX’s Polaris Dawn mission kicked off early Tuesday, launching a four-person crew of civilian astronauts into orbit. The company confirmed that the SpaceX Crew Dragon spacecraft carrying the crew reached its peak altitude of 1,400.7 kilometers (870 miles) at 9:19 p.m. The Polaris Dawn mission also marks the farthest any human has journeyed since the final Apollo mission in 1972 — and the farthest into space a woman has ever traveled. The pre-breathe protocol the Polaris Dawn crew is undergoing is entirely unlike what is carried out on the International Space Station. In this screenshot from video, the Polaris Dawn crew sit in the Dragon capsule shortly after launching towards space on Tuesday.

Persons: CNN —, Jared Isaacman, Scott “ Kidd ” Poteet, Anna Menon, Sarah Gillis —, Menon, Poteet, Gillis, Isaacman, Rick Mastracchio, Dave Williams, Polaris Dawn crew’s, ” Gillis, “, pressurization, Garrett Reisman Organizations: CNN, SpaceX, Polaris, SpaceX SpaceX, Shift4, US Air Force, NASA, Space Station, Space Locations: —

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