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Arsenal set unwanted English record as Man City win Premier League
Arsenal set unwanted English record as Man City win Premier League
Arsenal set an unwanted English record after conceding the Premier League title to Man City.
2023-05-21 03:28
Nasa launches Psyche mission to study an ancient metal asteroid
Nasa launches Psyche mission to study an ancient metal asteroid
Nasa has launched its Psyche craft into space, on a mission to study an ancient, metallic asteroid. The spacecraft set off on a six year journey, carried away by one of SpaceX’s Falcon Heavy rockets. It is aimed at an asteroid, also called Psyche, where it will arrive in 2029 and hopes to look back to the beginnings of our own Earth. Most asteroids tend to be rocky or icy, and this is the first exploration of a metal world. Scientists believe it may be the battered remains of an early planet’s core, and could shed light on the inaccessible centers of Earth and other rocky planets. SpaceX launched the spacecraft into a midmorning sky from NASA’s Kennedy Space Center. Psyche should reach the huge, potato-shaped object in 2029. After decades of visiting faraway worlds of rock, ice and gas, NASA is psyched to pursue one coated in metal. Of the nine or so metal-rich asteroids discovered so far, Psyche is the biggest, orbiting the sun in the outer portion of the main asteroid belt between Mars and Jupiter alongside millions of other space rocks. It was discovered in 1852 and named after Greek mythology’s captivating goddess of the soul. “It’s long been humans’ dream to go to the metal core of our Earth. I mean, ask Jules Verne,” said lead scientist Lindy Elkins-Tanton of Arizona State University. “The pressure is too high. The temperature is too high. The technology is impossible,” she added. “But there’s one way in our solar system that we can look at a metal core and that is by going to this asteroid.” Astronomers know from radar and other observations that the asteroid is big — about 144 miles (232 kilometers) across at its widest and 173 miles (280 kilometers) long. They believe it’s brimming with iron, nickel and other metals, and quite possibly silicates, with a dull, predominantly gray surface likely covered with fine metal grains from cosmic impacts. Otherwise, it’s a speck of light in the night sky, full of mystery until the spacecraft reaches it after traveling more than 2 billion miles (3.6 billion kilometers).Scientists envision spiky metal craters, huge metal cliffs and metal-encrusted eroded lava flows greenish-yellow from sulfur — “almost certain to be completely wrong,” according to Elkins-Tanton. It’s also possible that trace amounts of gold, silver, platinum or iridium — iron-loving elements — could be dissolved in the asteroid’s iron and nickel, she said. “There’s a very good chance that it’s going to be outside of our imaginings, and that is my fondest hope,” she said. Believed to be a planetary building block from the solar system’s formation 4.5 billion years ago, the asteroid can help answer such fundamental questions as how did life arise on Earth and what makes our planet habitable, according to Elkins-Tanton.On Earth, the planet’s iron core is responsible for the magnetic field that shields our atmosphere and enables life. Led by Arizona State University on NASA’s behalf, the $1.2 billion mission will use a roundabout route to get to the asteroid. The van-size spacecraft with solar panels big enough to fill a tennis court will swoop past Mars for a gravity boost in 2026. Three years later, it will reach the asteroid and attempt to go into orbit around it, circling as high as 440 miles (700 kilometers) and as close as 47 miles (75 kilometers) until at least 2031. The spacecraft relies on solar electric propulsion, using xenon gas-fed thrusters and their gentle blue-glowing pulses. An experimental communication system is also along for the ride, using lasers instead of radio waves in an attempt to expand the flow of data from deep space to Earth. NASA expects the test to yield more than 10 times the amount of data, enough to transmit videos from the moon or Mars one day. The spacecraft should have soared a year ago, but was held up by delays in flight software testing attributed to poor management and other issues. The revised schedule added extra travel time. So instead of arriving at the asteroid in 2026 as originally planned, the spacecraft won’t get there until 2029. That’s the same year that another NASA spacecraft — the one that just returned asteroid samples to the Utah desert — will arrive at a different space rock as it buzzes Earth. Additional reporting by Reuters Read More Watch live as Nasa launches spacecraft bound to orbit Psyche asteroid Here’s how you can see the ‘Ring of fire’ solar eclipse on Saturday Nasa opens up pieces of a distant asteroid transported back to Earth Prada to design Nasa’s next-gen space suits for Artemis astronauts 1.2 mile-high ‘dust devil’ spotted on Mars by Nasa’s Perseverance rover Rover captures one-mile-high whirlwind on Mars
2023-10-13 22:58
Great white sharks keep entering the twilight zone and experts are mystified
Great white sharks keep entering the twilight zone and experts are mystified
Great white sharks are displaying unprecedented behaviours, and experts can’t explain why. One of the ocean’s greatest apex predators has been entering the twilight zone way beneath the surface of the ocean, and far beneath the areas they normally feed in. The twilight zone, also referred to as the mesopelagic zone, is the area 200 to 1,000 metres down below the surface which is at least partly permeated by sunlight. The midnight zone, meanwhile, is found 1,000 to 3,000 metres down and is impenetrable to sunlight. Now, a new study published in the journal PNAS offered insight into the behaviours of 344 tagged predatory fish including great white sharks. Scientists would usually expect the creatures studied to dive to the deep scattering layer (DSL), which is full of small fish and other ocean life forms and therefore attracts more predators than other levels. However, there was also evidence that suggested predators dove down far deeper than the DSL, and scientists don’t know why. According to the research, great white sharks dive down to as deep as 1,128 metres. Camrin Braun is assistant scientist at the Woods Hole Oceanographic Institution and study lead. Braun told Live Science: "How, when, where they access the deep ocean certainly varies, but the clear anecdotal answer is that the deep ocean seems like an important habitat regardless of the predator species. It's clear there are good reasons for these animals to dive deep, otherwise why would they all do it? "There's good evidence for some species/situations in which diving deep is clearly for foraging," Braun added. "So that supported our expectation. However, we also find several cases where we can pretty definitively say the use of the deep ocean is not for feeding – or if it is it represents a totally different kind of predator-prey interaction or mysterious prey resource." The study could suggest that the twilight zone could be far more important to great white sharks and other predatory fish than previously thought. "If it turns out that there is indeed more biomass in the twilight zone than in all current marine capture fisheries combined then it's possible to imagine a kind of mesopelagic 'gold rush' to catch and use this biomass," Braun said. "There are many 'ifs' in this chain and many issues in making mesopelagic fishing feasible but it seems that biomass may be important for predators. Therefore, we really need to better quantify those links between predators and mesopelagic biomass before we can sustainably harvest/use those resources.” Sign up for our free Indy100 weekly newsletter How to join the indy100's free WhatsApp channel Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings
2023-11-22 23:16
We Have Proof That Caitlin Clark Is Human
We Have Proof That Caitlin Clark Is Human
Not even Caitlin Clark can avoid a rogue iron shot here and there.
2023-07-06 03:25
Verstappen toasts Tost after 19th win completes dominant season
Verstappen toasts Tost after 19th win completes dominant season
It was a measure of Max Verstappen’s spare capacity in a season of record-breaking success that the first person he mentioned on Sunday after winning the Abu Dhabi Grand Prix was a...
2023-11-27 00:53
Biden wants voters to notice inflation drop. Republicans say people are put off by everyday prices
Biden wants voters to notice inflation drop. Republicans say people are put off by everyday prices
The politics of inflation took a sharp turn with a new report showing consumer prices rose at the slowest pace since the early months of Joe Biden’s presidency
2023-07-13 03:45
Detroit Tigers release veteran catcher Eric Haase, sign free agent C Carson Kelly with eye on future
Detroit Tigers release veteran catcher Eric Haase, sign free agent C Carson Kelly with eye on future
With an eye toward improving their catching in the future, the Detroit Tigers designated veteran Eric Haase for assignment and signed free agent catcher Carson Kelly
2023-08-20 05:57
Markets extend global rally after 'Goldilocks' US jobs data
Markets extend global rally after 'Goldilocks' US jobs data
Asian equities on Monday built on a global rally after a mixed US jobs report lifted hopes the Federal Reserve will hold off...
2023-06-05 11:30
TuneIn & The BIG 615 Want to Fly You and a Friend to the Sugar Bowl for a Garth Brooks Concert
TuneIn & The BIG 615 Want to Fly You and a Friend to the Sugar Bowl for a Garth Brooks Concert
SAN FRANCISCO--(BUSINESS WIRE)--Aug 4, 2023--
2023-08-04 23:59
Momentum Ventures Charts New Waters with CruiseHub™ Launch: A Fresh Perspective on Cruise Booking
Momentum Ventures Charts New Waters with CruiseHub™ Launch: A Fresh Perspective on Cruise Booking
NEW YORK--(BUSINESS WIRE)--Nov 21, 2023--
2023-11-21 20:24
Lyles has sights on World Championships sprint double
Lyles has sights on World Championships sprint double
Reigning 200m world champion Noah Lyles steps up his campaign for a sprint double at this year's world Championships in Budapest when he tackles the 100m at...
2023-07-06 12:17
European stocks inch to five-week high, Spain lags on election jitters
European stocks inch to five-week high, Spain lags on election jitters
By Sruthi Shankar European equities touched five-week highs on Monday as upbeat earnings and hopes that the European
2023-07-24 17:59