Humanity is on course to transgress multiple global "tipping points" that could lead to irreversible instability or the complete collapse of ecological and institutional systems, a United Nations report has warned.
Environment
Oct 28, 2023
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As yet another space rocket is launched and more technology is placed into orbit, the problem of space junk grows and grows, not to mention the pollution from all the fuel burned en route.
Space Exploration
Oct 27, 2023
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37
Melting glaciers, unbearable heat and space junk: a month before crunch climate talks in the United Arab Emirates, a UN report published Wednesday warns about irreversible impacts to the planet without drastic changes to ...
Environment
Oct 25, 2023
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Debris disks are quite common in the universe. Young stars have protoplanetary disks from which planets form. Black holes have accretion disks that are the source of the galactic jets. Supernova remnants can form a disk around ...
Astronomy
Oct 23, 2023
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Volcanic debris from the massive Taupō eruption about 1,800 years ago has been found buried deep in Antarctic ice, according to a new study published in Scientific Reports.
Earth Sciences
Oct 10, 2023
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Any mission headed to space needs a "parking spot" at its destination. But these parking spots, regions located on orbits, are quickly becoming occupied or more vulnerable to collisions.
Space Exploration
Oct 4, 2023
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US authorities said they have issued a "breakthrough" first-ever fine over space debris, slapping a $150,000 penalty on a TV company that failed to properly dispose of a satellite.
Space Exploration
Oct 3, 2023
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75
Three billion years ago, amid one of the last wet periods on Mars, powerful debris flows carried mud and boulders down the side of a hulking mountain. The debris spread into a fan that was later eroded by wind into a towering ...
Planetary Sciences
Sep 18, 2023
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297
After NASA's DART mission slammed into asteroid Dimorphous in September 2022, scientists determined the impact caused tons of rock to be ejected from the small asteroid's surface. But more importantly, DART's impact altered ...
Astronomy
Sep 8, 2023
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One in five glaciers on Earth are covered with a layer of rocky debris. The presence of debris influences how glaciers melt. In the Himalaya, debris covers most large glaciers, and it is so thick that it should insulate the ...
