Fuel flow, heat fluctuations drive dangerous oscillations in rocket engines
Combustion engines can develop high frequency oscillations, leading to structural damage to the engines and unsafe operating conditions. A detailed understanding of the physical mechanism that causes these oscillations is required but has been lackin.....»»
Faulty valve scuttles Starliner’s first crew launch
The soonest opportunity for Atlas V and Starliner to launch is Friday night. Enlarge / The Atlas V rocket and Starliner spacecraft on their launch pad Monday. (credit: NASA/Joel Kowsky) Astronauts Butch Wilmore and Suni.....»»
From fossils to fuel: Energy potential of Mozambique"s Maniamba Basin
In the ever-expanding search for energy resources, a new study has emerged from Mozambique's Maniamba Basin. A team led by Nelson Nhamutole, a Ph.D. student at the University of the Witwatersrand, and his team of scientists from around the world, sha.....»»
From flooding in Brazil and Houston to brutal heat in Asia, extreme weather seems nearly everywhere
In sweltering Brazil, worst-ever flooding killed dozens of people and paralyzed a city of about 4 million people. Voters and politicians in the world's largest election in India are fainting in heat that hit as high as 115 degrees (46.3 degrees Celsi.....»»
Boeing Starliner crewed mission postponed until at least Friday
The first crewed launch of Boeing's Starliner spaceship will have to wait until at least Friday to give ground teams time to analyze a malfunctioning rocket valve, pushing back a high-stakes test trip to the International Space Station......»»
Computer models show heat waves in north Pacific may be due to China reducing aerosols
A team of oceanographers and planetary scientists at the Ocean University of China, working with a pair of colleagues from the U.S. and one in Germany, has found via computer modeling, that recent heat waves in the north Pacific may be due to a large.....»»
U.S. presses Germany on Mercedes" handling of UAW organizing drive in Ala.
Allegations by the UAW against Mercedes include claims the automaker fired union activists and discouraged unionization. Mercedes contends the UAW claims have no merit......»»
The universe could be filled with ultralight black holes that can"t die
Primordial black holes are hypothetical objects formed during the earliest moments of the universe. According to the models, they formed from micro-fluctuations in matter density and spacetime to become sand grain-sized mountain-massed black holes......»»
Bee body mass, pathogens and local climate influence heat tolerance
How well bees tolerate temperature extremes could determine their ability to persist in a changing climate. But heat tolerance varies between and within populations, so a research team led by Penn State entomologists examined bee physical traits—su.....»»
Researchers find Northern Hemisphere glaciation enhances orbital- and millennial-scale Asian winter monsoon variability
In a study published in Nature Communications, researchers have documented that persistent millennial-scale Asian winter monsoon (AWM) intensity fluctuations were superimposed on 41-kyr and ~100-kyr orbital variability during both the warmer (higher.....»»
The surprise is not that Boeing lost commercial crew but that it finished at all
"The structural inefficiency was a huge deal." Enlarge / Boeing's Starliner spacecraft is lifted to be placed atop an Atlas V rocket for its first crewed launch. (credit: United Launch Alliance) NASA's senior leaders in.....»»
The One Thing Holding Back Heat Pumps
It’s not the technology itself. It’s that we don’t yet have enough trained workers to install heat pumps for full-tilt decarbonization......»»
Extreme heat drives Chile wildfires leaving at least 51 dead
Chileans Sunday feared a rise in the death toll from wildfires blazing across the South American country that have already killed at least 51 people, leaving bodies in the street and homes gutted......»»
These dangerous scammers don’t even bother to hide their crimes
Cybercriminals openly run dozens of scams across social media and messaging apps. Enlarge (credit: Kuzmik_A/Getty Images) Most scammers and cybercriminals operate in the digital shadows and don’t want you to know how.....»»
Vietnam temperature records tumble as heat wave scorches
More than 100 temperature records fell across Vietnam in April, according to official data, as a deadly heat wave scorches South and Southeast Asia......»»
NASA hasn’t landed on the Moon in decades—China just sent its third in six years
China is going. NASA is talking about going. What gives? Enlarge / A Long March 5 rocket carrying the Chang'e-6 lunar probe blasts off from the Wenchang Space Launch Center on May 3, 2024 in Wenchang, China. (credit: Li Zhenzhou/.....»»
NASA’s Orion spacecraft has ‘critical issues’ with its heat shield, report finds
NASA intends to use its Orion capsule to send astronauts to the moon, but a report has found that issues with the capsule's heat shield could be a safety risk......»»
Ariane 6 launches: Exolaunch"s EXOpod Nova
Europe's newest rocket soon launches, taking with it many space missions each with a unique objective, destination and team at home, cheering them on. Whether launching new satellites to look back and study Earth, peer out to deep space or test impor.....»»
Lahar detection system upgraded for Mount Rainier
In the shadow of Washington State's Mount Rainier, about 90,000 people live in the path of a potential large lahar—a destructive, fluid and fast-moving debris flow associated with volcanic slopes......»»
Rocket Report: Astroscale chases down dead rocket; Ariane 6 on the pad
Rocket Factory Augsburg, a German launch startup, nears a test-firing of its booster. Enlarge / This image captured by Astroscale's ADRAS-J satellite shows the discarded upper stage from a Japanese H-IIA rocket. (credit: Astrosca.....»»
Research shows bumblebee nests are overheating due to climate change, threatening future populations
As a result of the climate crisis, global warming is driving up temperatures around the world—and bumblebees, like humans, are struggling to cope with homes that can't beat the heat......»»