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NASA’s Orion capsule made a blisteringly fast return from the Moon Sunday, parachuting into the Pacific off Mexico to conclude a test flight that should clear the way for astronauts on the next lunar flyby.

The incoming capsule hit the atmosphere at Mach 32, or 32 times the speed of sound, and endured reentry temperatures of 5,000 degrees Fahrenheit (2,760 degrees Celsius) before splashing down west of Baja California near Guadalupe Island. A Navy ship quickly moved in to recover the spacecraft and its silent occupants — three test dummies rigged with vibration sensors and radiation monitors.

NASA hailed the descent and splashdown as close to perfect, as congratulations poured in from Washington..

“I’m overwhelmed,” NASA Administrator Bill Nelson said from Mission Control in Houston. “This is an extraordinary day… It’s historic because we are now going back into space — deep space — with a new generation.”

The space agency needed a successful splashdown to stay on track for the next Orion flight around the Moon, targeted for 2024 with four astronauts who will be revealed early next year. That would be followed by a two-person lunar landing as early as 2025 and, ultimately, a sustainable Moon base. The long-term plan would be to launch a Mars expedition by the late 2030s.

Astronauts last landed on the Moon 50 years ago. After touching down on December 11, 1972, Apollo 17′s Eugene Cernan and Harrison Schmitt spent three days exploring the valley of Taurus-Littrow, the longest stay of the Apollo era. They were the last of the 12 Moonwalkers.

Orion was the first capsule to visit the Moon since then, launching on NASA’s new mega Moon rocket from Kennedy Space Center on November 16. It was the first flight of NASA’s new Artemis Moon program, named after Apollo’s mythological twin sister.

“From Tranquility Base to Taurus-Littrow to the tranquil waters of the Pacific, the latest chapter of NASA’s journey to the Moon comes to a close. Orion back on Earth,” announced Mission Control commentator Rob Navias.

While no one was on the $4 billion test flight, NASA managers were thrilled to pull off the dress rehearsal, especially after so many years of flight delays and busted budgets. Fuel leaks and hurricanes conspired for additional postponements in late summer and fall.

In an Apollo throwback, NASA held a splashdown party at Houston’s Johnson Space Center on Sunday, with employees and their families gathering to watch the broadcast of Orion’s homecoming. Next door, the visitor center threw a bash for the public.

Getting Orion back intact after the 25-day flight was NASA’s top objective. With a return speed of 25,000 mph (40,000 kph) — considerably faster than coming in from low-Earth orbit — the capsule used a new, advanced heat shield never tested before in spaceflight. To reduce the gravity or G loads, it dipped into the atmosphere and briefly skipped out, also helping to pinpoint the splashdown area.

All that unfolded in spectacular fashion, officials noted, allowing for Orion’s safe return.

“I don’t think any one of us could have imagined a mission this successful,” said mission manager Mike Sarafin.

Further inspections will be conducted once Orion is back at Kennedy by month’s end. If the capsule checks find nothing amiss, NASA will announce the first lunar crew amid considerable hoopla in early 2023, picking from among the 42 active U.S. astronauts stationed at Houston’s Johnson Space Center.

“People are anxious, we know that,” Vanessa Wyche, Johnson’s director, told reporters. Added Nelson: “The American people, just like (with) the original seven astronauts in the Mercury days, are going to want to know about these astronauts.”

The capsule splashed down more than 300 miles (482 kilometers) south of the original target zone. Forecasts calling for choppy seas and high wind off the Southern California coast prompted NASA to switch the location.

Orion logged 1.4 million miles (2.25 million kilometers) as it zoomed to the Moon and then entered a wide, swooping orbit for nearly a week before heading home.

It came within 80 miles (130 kilometers) of the Moon twice. At its farthest, the capsule was more than 268,000 miles (430,000 kilometers) from Earth.

Orion beamed back stunning photos of not only the gray, pitted Moon, but also the home planet. As a parting shot, the capsule revealed a crescent Earth — Earthrise — that left the mission team speechless.

Nottingham Trent University astronomer Daniel Brown said the flight’s many accomplishments illustrate NASA’s capability to put astronauts on the next Artemis Moonshot.

“This was the nail-biting end of an amazing and important journey for NASA’s Orion spacecraft,” Brown said in a statement from England.

The Moon has never been hotter. Just hours earlier Sunday, a spacecraft rocketed toward the Moon from Cape Canaveral. The lunar lander belongs to ispace, a Tokyo company intent on developing an economy up there. Two U.S. companies, meanwhile, have lunar landers launching early next year.


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Is the Wheel of Ghosts an Ancient Observatory? New Study Suggests Otherwise

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Is the Wheel of Ghosts an Ancient Observatory? New Study Suggests Otherwise

The ancient Rujm el-Hiri site, situated in the Golan Heights and often referred to as the “Wheel of Ghosts,” has been re-evaluated, with its long-standing identification as an astronomical observatory coming under scrutiny. Researchers have determined that geodynamic changes over millions of years have altered the site’s orientation, raising questions about its original purpose. These findings, derived from advanced geophysical and remote sensing techniques, provide a new perspective on this enigmatic archaeological structure.

Geophysical Insights Challenge Established Theories

According to the study published in Remote Sensing, geodynamic movements averaging 8–15 millimetres per year over 150 million years shifted the site’s alignment significantly. Researchers from Tel Aviv University and Ben-Gurion University, led by Dr Olga Khabarova and Prof Lev Eppelbaum, concluded that the structure’s current orientation does not match celestial patterns, contradicting earlier interpretations of its function. The entrances and radial walls, when reconstructed to their original positions, were shown to lack alignment with solstices, equinoxes, or other astronomical markers.

Advanced Techniques Reveal Archaeological Landscape

As reported by SciTech Daily, the researchers employed geomagnetic analysis and satellite technology to document the surrounding archaeological features within a 30-kilometre radius of the Sea of Galilee. Unique circular structures, some up to 90 metres in diameter, were identified alongside burial mounds and round enclosures. These findings suggest agricultural and herding purposes rather than purely ceremonial or observational roles.

A Broader Perspective on Rujm el-Hiri’s Role

Dr Michal Birkenfeld of Ben-Gurion University emphasised in his statement to SciTech Daily that this reassessment enriches understanding of ancient life in the Golan Heights. The research team noted that the study reopens debates about the site’s purpose while highlighting its integration into a broader archaeological landscape. By questioning past assumptions, the study encourages further exploration of how ancient communities interacted with their environment.

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Scientists Investigate Hypernuclei To Understand Subatomic Forces and Neutron Stars

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Scientists Investigate Hypernuclei To Understand Subatomic Forces and Neutron Stars

A breakthrough has been reported in particle physics, focusing on hypernuclei—rare atomic systems that form through the inclusion of hyperons, particles containing at least one “strange” quark. Unlike the ordinary nuclei of atoms made of protons and neutrons, hypernuclei exhibit unique properties that may offer insights into subatomic forces and the extreme conditions present in neutron stars. Scientists aim to deepen the understanding of these fleeting structures and their implications for astrophysics and nuclear physics.

Insights from Advanced Research

According to a study published in The European Physical Journal A, researchers led by Ulf-G. Meißner from the Institute for Advanced Simulation in Jülich and the University of Bonn applied nuclear lattice effective field theory to investigate hypernuclei. This approach simplifies the study of nuclear interactions by focusing on protons, neutrons, and hyperons rather than quarks and gluons, providing a computationally feasible way to study these particles.

This study specifically examined Λ-hyperons, one of the lightest hyperons, and their interactions within hypernuclei. A lattice-based model was utilised, where particles are simulated within a discrete grid, reducing the complexity of the calculations. Forces governing the structure of hypernuclei were calculated, achieving agreement with experimental data within a 5 percent margin of accuracy. The method also allowed the study of hypernuclei with up to 16 constituents, expanding the scope of earlier models.

Implications for Neutron Stars

Hypernuclei are theorised to form in neutron stars due to the immense pressure and density in their cores. The measurable properties of neutron stars, such as mass and radius, could be influenced by the presence of hyperons. By using advanced X-ray telescopes and gravitational wave detectors, scientists hope to detect deviations from existing models, potentially confirming hyperons’ role in these environments.

Further research is required to refine models and explore pion exchanges, which may alter the forces within hypernuclei. Enhanced experimental data and precision in accelerator experiments are expected to contribute to this field in the future.

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Mathematicians Uncover Science Behind Hula Hooping and Body Dynamics

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Mathematicians Uncover Science Behind Hula Hooping and Body Dynamics

The mechanics of hula hooping have been analysed by researchers, uncovering how body shapes and motions influence the ability to keep a hoop spinning against gravity. Insights from the study have raised intriguing questions about body dynamics, energy efficiency, and potential engineering applications. The findings, based on experiments and mathematical modelling, offer new perspectives on an activity often overlooked in scientific research. Key revelations include the role of body curvature and slope in maintaining the hoop’s motion.

Study Details Dynamics of Hula Hooping

According to research published in the Proceedings of the National Academy of Sciences, experiments were conducted using miniature robotic models at New York University’s Applied Mathematics Laboratory. Different shapes, such as cylinders, cones, and hourglasses, were replicated at one-tenth human scale to examine their impact on hula hooping efficiency. Motorised motions were applied to these models, and high-speed cameras captured the behaviour of hoops launched onto the robotic forms.

Findings indicated that successful twirling could be achieved without significant variation based on body cross-section shapes, such as circles or ellipses. However, maintaining the hoop’s height against gravity required specific physical attributes, particularly sloping hips and a curvy waist. These characteristics provided the necessary angles for upward thrust and stability, helping to keep the hoop in motion.

Mathematical Modelling and Broader Applications

Senior researcher and associate professor Leif Ristroph explained in a press release that mathematical models were developed to explain the physical principles observed. These models offered insight into the interaction between body motion and hoop dynamics, which could be extended to applications such as energy harvesting and robotics.

The researchers highlighted that the work bridges a gap in the understanding of a popular activity, while also demonstrating its relevance to technology. Ristroph noted that these findings could lead to improvements in robotic systems used in manufacturing, as well as innovative ways to utilise energy generated by vibrations.

This research sheds light on the science behind hula hooping, offering practical applications while enhancing the understanding of human and mechanical motion.

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