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Unknown external force in the large-scale structure, a broken arm appears in the galactic sagittarius arm | TechNews – Tech Gaming Report

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The Milky Way is our home, but since we are in it, it may be the least familiar galaxy in terms of observation. Recently, astronomers discovered for the first time in the Milky Way that the spiral arms of Sagittarius were broken, disrupting the seemingly uniform flow of the Milky Way.

The Milky Way is a beautiful spiral galaxy, which includes 4 main spiral arms, namely: Swan Arm (or Outer Arm, Rectangular Arm), Southern Shield-Cross Arm, Sagittarius Arm, Perseus Arm, the interstellar matter in the Way. Milky Way and Hundreds of Billions of stars are distributed in the arms of these galaxies, but the spiral structure of the Milky Way has not been fully determined, and the spiral arms often branch, merge, and twist. For example, our solar system is located on the Sagittarius branch arm – the upper arm of Orion.

▲ The spiral arms of the Milky Way. (Source:Dragonflight and Surachit (English version), Zanhsieh (translation from zh-hant)., CC BY-SA 3.0, via Wikimedia Commons)

One of the methods used by astronomers to map the Milky Way is to measure the positions and distances of thousands of stars. For example, the main objective of the Gaia satellite is to study the positions and trajectories of more than one billion stars and discover the details of the structure of the Milky Way.

Another method is to observe certain objects in the Milky Way, such as the nebula that is usually located in the spiral arms of the galaxy with a large amount of gas and dust. The Spitzer Infrared Space Telescope measures the distance of many young stars in the nebula to help us confirm that the Milky Way has 4 main spiral arms.

Now, a new study combines observational data from the Gaia satellite and the Spitzer telescope to focus on analyzing the general distribution of the Sagittarius Nebula and the stars. The first includes four famous nebulae: the Eagle Nebula (where the Pillar of Creation is located), the Omega Nebula and the Three in the Divided Nebula and the Lagoon Nebula, it was found that although the elevation angle of the main arm was approximately 12 degrees as in the past, there was a regional elevation angle of 60 degrees, that is, a structure appeared almost perpendicular to the original spiral arm, with a length of about 3,000 lights. year.

▲ A broken arm appears on the horse’s arm. (Source:POT

In addition to the peculiar protruding angle, hundreds of thousands of stars in the broken arm appear to move at the same speed and direction, indicating that the stars there may form at roughly the same time and are affected by the same gravitational force, which is That is, there is a local external force that removes these nebulae from another long straight line being drawn from the centaur’s arm.

The research team does not yet know what caused these stars to separate from their original spiral arms. If we look closer, we are more likely to find similar spiral arms.New treatyPosted in Astronomy and Astrophysics.

(Source of the first image:POT

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SpaceX tourists chatted with Tom Cruise from space – Vaughan Today

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space tourists fly Currently orbiting the Earth aboard the SpaceX spacecraft discussed with Famous actor Tom Cruise From space, the mission’s account announced Friday.

It will also be streamed live on Youtube at approximately 9 PM GMT (5 PM on the US East Coast), for ” Evaluate their multi-day trip SpaceX announced in a tweet.

Tom Cruise soon in space?

« Rook, Nova, Hanks, and Leo spoke to Tom Cruise today The official Inspiration4 mission account tweeted earlier, using the nicknames of the first four special passengers to fly. with SpaceX.

The tweet said they “shared their experience from space” with the actor. ” Maverick, you can be our ward whenever you want. Maverick is the name of the elite pilot that he embodies Tom Cruise in the movie Best.

Last year, former NASA administrator under Donald Trump, Jim Bridenstine, announced a lightweight film project, starring Tom Cruise, On board the International Space Station.

However, no details have been provided at the moment about the project, which should be done in cooperation with SpaceX.

The four Inspiration4 passengers – billionaire Jared Isaacman and three other Americans – took off Wednesday night from Florida. They are currently flying farther from the International Space Station, and the mission is scheduled to last three days in total.

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Three astronauts land safely after China’s longest crewed space mission to date – Digital Trends

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Three Chinese astronauts have returned safely from space following a three-month stay at the new Tiangong space station which is currently under construction. Tang Hongbo, Nie Haisheng, and Liu Boming landed on Friday, September 18. This marks the longest ever crewed space mission for China at 92 days, far exceeding the previous record of the Shenzhou 11 mission in 2016 which lasted for 33 days.

The astronauts are safe and well and in good physical condition, according to the China Manned Space Agency, which described the mission overall as “a complete success.” Having landed at the Dongfeng landing site, the astronauts have since been transferred to Beijing where they arrived by plane on Friday night.

Astronauts Nie Haisheng (C), Liu Boming (R) and Tang Hongbo are out of the return capsule of the Shenzhou-12 spaceship at the Dongfeng landing site in north China’s Inner Mongolia Autonomous Region on Sept. 17, 2021. Three Chinese astronauts, the first sent to orbit for space station construction, have completed their three-month mission and returned to Earth safely on Friday. Xinhua/Lian Zhen

“Three Chinese astronauts, the first sent to orbit for space station construction, have completed their three-month mission and returned to Earth safely on Friday,” Chinese state news agency Xinhua wrote in a brief statement. “The return capsule of the Shenzhou-12 manned spaceship, carrying astronauts Nie Haisheng, Liu Boming, and Tang Hongbo, touched down at the Dongfeng landing site in north China’s Inner Mongolia Autonomous Region, according to the China Manned Space Agency (CMSA).”

The astronauts spent three months in space under the Shenzhou-12 mission, working on China’s new space station. The first module of the new Tiangong space station was launched in April this year, weighing 22 tons and coming in at around the size of a five-story building. A first cargo mission to the new station was completed in May, in preparation for the first astronauts arriving there.

The three astronauts then launched in June, marking China’s first crewed space mission in five years. During their time on the station, they performed two spacewalks to install equipment on the outside of the structure and carried out scientific experiments.

This was the first of four planned crewed missions to the station during its construction period, with aims to have it completed by 2022.

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SpaceX capsule with world's first all-civilian orbital crew returns safely – Financial Post

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The quartet of newly minted citizen astronauts comprising the SpaceX Inspiration4 mission safely splashed down in the Atlantic off Florida’s coast on Saturday, completing a three-day flight of the first all-civilian crew ever sent into Earth orbit.

The successful launch and return of the mission, the latest in a recent string of rocket-powered expeditions bankrolled by their billionaire passengers, marked another milestone in the fledgling industry of commercial astro-tourism, 60 years after the dawn of human spaceflight.

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“Welcome to the second space age,” Todd “Leif” Ericson, mission director for the Inspiration4 venture, told reporters on a conference call after the crew returned.

SpaceX, the private rocketry company founded by Tesla Inc electric automaker CEO Elon Musk, supplied the spacecraft, launched it, controlled its flight and handled the splashdown recovery operation.

The three-day mission ended as the SpaceX Crew Dragon capsule, dubbed Resilience, parachuted into calm seas around 7 p.m. EDT (2300 GMT), shortly before sunset, following an automated reentry descent, as shown during a live SpaceX webcast on its YouTube channel.

Within an hour the four smiling crew members were seen emerging one by one from the capsule’s side hatch after the vehicle, visibly scorched on its exterior, was hoisted from the ocean to the deck of a SpaceX recovery vessel.

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Each of the four https://www.reuters.com/lifestyle/science/profiles-first-all-civilian-space-crew-headed-orbit-2021-09-15 stood on the deck for a few moments in front of the capsule to wave and give thumbs-up before being escorted to a medical station on board for checkups at sea. Afterward they were flown by helicopter back to Cape Canaveral for reunions with loved ones.

SEARING REENTRY

The return from orbit followed a plunge through Earth’s atmosphere generating frictional heat that sent temperatures surrounding the outside of the capsule soaring to 3,500 degrees Fahrenheit (1,900 degrees Celsius). The astronauts’ flight suits, fitted to special ventilation systems, were designed to keep them cool if the cabin heated up.

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Applause was heard from the SpaceX flight control center in suburban Los Angeles as the first parachutes were seen deploying, slowing the capsule’s descent to about 15 miles per hour (25 kph) before splashdown, with another round of cheers as the craft hit the water.

The astronauts were cheered again as they stepped onto the deck of the recovery ship.

First out was Hayely Arceneaux, 29, a physician assistant at St. Jude Children’s Research Center in Tennessee, a childhood bone cancer survivor herself who became the youngest person ever reach Earth orbit on the Inspiration4 mission.

She was followed in rapid succession by geoscientist and former NASA astronaut candidate Sian Proctor, 51, aerospace data engineer and Air Force veteran Chris Sembroski, 42, and finally the crew’s billionaire benefactor and “mission commander” Jared Isaacman, 38.

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“That was a heck of a ride for us,” Isaacman, chief executive of the e-commerce firm Shift4 Payments Inc, radioed from inside the capsule moments after splashdown. “We’re just getting started.”

He had paid an undisclosed sum – put by Time magazine at roughly $200 million – to fellow billionaire Musk for all four seats aboard the Crew Dragon.

The Inspiration4 team blasted off on Wednesday from the Kennedy Space Center in Cape Canaveral atop one of SpaceX’s two-stage reusable Falcon 9 rockets.

HIGHEST ORBIT SINCE APOLLO

Within three hours the crew capsule had reached a cruising orbital altitude of 585 km, or just over 363 miles – higher than the International Space Station or Hubble Space Telescope, and the farthest any human has flown from Earth since NASA’s Apollo moon program ended in 1972.

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It also marked the debut flight of Musk’s new space tourism business and a leap ahead of competitors likewise offering rides on rocket ships to well-heeled customers willing to pay a small fortune to experience the exhilaration of spaceflight and earn amateur astronaut wings.

Musk’s company already ranks as the best-established player in the burgeoning constellation of commercial rocket ventures, having launched numerous cargo payloads and astronauts to the space station for NASA.

Two rival operators, Virgin Galactic Holdings Inc and Blue Origin, inaugurated their own space tourism services in recent months, with their respective founding executives, billionaires Richard Branson and Amazon.com founder Jeff Bezos, each going along for the ride.

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Those suborbital flights, lasting a matter of minutes, were short hops compared with Inspiration4’s three days in orbit.

Isaacman conceived of Inspiration4 primarily to raise awareness and donations for St. Jude, one of his favorite causes, where Arceneaux now works. Ericson said the flight had so far raised $160 million for the cancer institute, including $100 million donated by Isaacman at the outset.

The Inspiration4 crew had no part to play in flying the spacecraft, which was controlled by ground-based flight teams and onboard guidance systems, although Isaacman and Proctor are both licensed pilots.

But Ericson insisted the crew had “the same training and the same control and authority that NASA astronauts have” to intervene in the Crew Dragon’s operation in the event of an emergency.

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SpaceX’s human-spaceflight chief, Benji Reed, marveled at how little went wrong during the flight, citing just two problems he described as minor and easily resolved – a malfunctioning fan in the crew’s toilet system and a faulty temperature sensor on one of the spacecraft’s engines.

The level of “space adaption syndrome” experienced by the crew – vertigo and motion sickness while acclimating to a microgravity environment – was “pretty much on target with what NASA astronauts do,” Ericson said.

All four had appeared relaxed and energetic during a number of live video appearances they made for Earth-bound audiences during their flight, from performing zero-G somersaults in the cabin to strumming a ukulele https://www.reuters.com/lifestyle/science/all-civilian-inspiration4-crew-shows-off-zero-gravity-orbit-2021-09-18.

(Writing and additional reporting by Steve Gorman in Los Angeles; Editing by Daniel Wallis, David Gregorio and William Mallard)

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