Astronomy

People who had higher levels of xylitol in their blood were more likely to have a heart attack or stroke within the next three years, with lab experiments suggesting the sweetener promotes blood clotting

Most pregnant people take prenatal supplements, but weak regulation means these products don’t necessarily provide the needed nutrients

NASA astronaut Bob Hines helped bring the first Boeing Starliner to the International Space Station. Now he's part of the large ground team supporting Crew Test Flight, which launched May 21.

Following months of meticulous testing to ensure that it will deliver first-class data on air quality around the world, the new Copernicus Sentinel-5 instrument has been delivered to Airbus in France ready to be installed on the first MetOp Second Generation weather satellite.

Most orangutans take seven years to learn to make their own beds

More than 40 companies, research centres and international organisations signed the Zero Debris Charter at the Berlin International Airshow (ILA) today, confirming their dedication to the long-term sustainability of human activities in space.

New books from Adrian Tchaikovsky and the late Michael Crichton (with James Patterson) are among the great new sci-fi novels out this month

New books from Adrian Tchaikovsky and the late Michael Crichton (with James Patterson) are among the great new sci-fi novels out this month

The Dutch police force is already using a remotely controlled Spot robot dog made by Boston Dynamics to examine drug labs in raids, and now it wants to make the robot fully autonomous

The Dutch police force is already using a remotely controlled Spot robot dog made by Boston Dynamics to examine drug labs in raids, and now it wants to make the robot fully autonomous

Boeing's Starliner capsule is scheduled to reach the ISS today (June 6) on its first-ever crewed mission, and you can watch the action live.

SpaceX is getting ready to launch its massive Starship rocket today at 12.30pm UK time and we have all the details on the mission

The burgeoning use of wood as a building material is a path to more sustainable construction, and it may have psychological benefits too, finds Graham Lawton

The burgeoning use of wood as a building material is a path to more sustainable construction, and it may have psychological benefits too, finds Graham Lawton

A pair of Chinese taikonauts have completed an eight-hour spacewalk repairing damage to the Tiangong Chinese Space Station’s solar panels. It’s believed the damage was caused by tiny pieces of space debris, which impacted the solar wings and degraded their function. They performed a first repair spacewalk in December 2023 and completed the repairs with their second trip outside in March 2024. The Shenzhou 17 crew were the sixth group living in Tiangong and were relieved by the Shenzhou-18 team in late April.

The Shenzhou-18 mission, launched prior to the conclusion of Shenzhou-17, will last approximately six months. The crew, consisting of Ye Guangfu, Li Cong, and Li Guangsu, launched from the Jiuquan Satellite Launch Center aboard a Long March 2F rocket at 20h59 Beijing Time. Their spacecraft docked with the station’s Tianhe core module approximately six and a half hours after liftoff. On May 28, 2024, Ye Guangfu and Li Guangsu executed China’s longest spacewalk to date, lasting eight and a half hours, installing a space debris protection device on the station.

Senior Colonel Tang Hongbo and Lieutenant Colonel Jiang Xinlin completed nearly eight hours of extravehicular activity to repair damage to the Tianhe core module’s solar wings caused by impacts from tiny space debris. Lieutenant Colonel Tang Shengjie provided internal support throughout the operation, which marked the first instance of such a repair by Chinese taikonauts. This event, the 15th spacewalk conducted by Chinese astronauts, underscores the critical nature of maintaining the station’s integrity and safety. These operations are complex, but vital and require precise coordination and planning between the astronauts and ground control.

Although the term “spacewalk” is commonly used, the official term for when an astronaut ventures outside a spacecraft is Extravehicular Activity (EVA). The definition of an EVA can vary depending on the country conducting the operation. For instance, Russian and Soviet spacecraft designates an EVA as any instance where a cosmonaut spends time in a vacuum while in a space suit, using specialized airlocks for this purpose. In contrast, the American definition requires at least the astronaut’s head to be outside the spacecraft. Regardless of the definition, an EVA involves leaving the protective environment of the spacecraft and entering outer space, the area outside of Earth’s atmosphere. China made history as the third country to independently perform an Extravehicular Activity (EVA) on September 27, 2008, during the Shenzhou-7 mission. During this mission, Chinese taikonaut Zhai Zhigang completed a 22-minute spacewalk, fully exiting the spacecraft while wearing the Chinese-developed Feitian space suit. Taikonaut Liu Boming, dressed in the Russian-derived Orlan space suit, assisted Zhai by standing by at the airlock and straddling the portal.

The vacuum of space presents significant dangers due to its near complete lack of gas pressure. On Earth, our atmosphere, a mix of nitrogen, oxygen, and hydrogen gases, exerts a pressure of about 101 kilopascals at sea level, which our bodies are accustomed to. In space, however, the absence of pressure means that without a proper space suit, the air in an astronaut’s lungs would rapidly escape, and gases in body fluids would expand, causing severe internal damage. Additionally, astronauts face extreme temperatures, with sunlit objects reaching over 248 degrees Fahrenheit (120 degrees Celsius) and shaded areas dropping below negative 212 degrees Fahrenheit (negative 100 degrees Celsius). Furthermore, radiation from the sun, ultraviolet rays, and tiny meteoroids pose additional hazards.

To mitigate these risks, space suits are designed to maintain life support in the vacuum of space while allowing for sufficient mobility to perform tasks. These suits are essential for EVAs, providing the necessary protection against the harsh conditions of outer space. This advanced technology enables astronauts like those from the Shenzhou-17 crew to conduct critical repair operations and scientific experiments, ensuring the continued functionality and safety of missions aboard the Tiangong space station.

Since 2021, China has significantly advanced its space capabilities by conducting numerous extravehicular activities, each lasting several hours. These EVAs have been crucial for the construction and maintenance of the Tiangong space station.

During their time on the station, the Shenzhou-17 crew continued with planned space science experiments, technical tests, planned maintenance, and the installation of extravehicular payloads. Their tenure concluded with a handover to the incoming Shenzhou- 18 crew, ensuring the continuous operation of the Tiangong space station.

The recent repair and continued maintenance operations by both crews not only demonstrate China’s growing expertise in manned spaceflight but also highlight the collaborative and technical challenges of sustaining life and functionality in the harsh environment of space. The Tiangong space station is an important platform for research and technological advancement. The dedication of the Shenzhou crews, and the ongoing operational improvements in orbit pave the way for long term and sustained human activities far beyond our atmosphere.

The post Chinese Astronauts Just Repaired Space Debris Damage Outside the Station appeared first on Universe Today.

Video: 00:02:15

The 2024 edition of the Berlin International Airshow (ILA), Germany's largest aerospace trade show, opened its doors on 5 June. ESA is taking part with an exhibition in the Space Pavilion alongside the German Space Agency (DLR) and the German Aerospace Industries Association (BDLI).

Highlights of the opening day included the visit of the German Federal Chancellor Olaf Scholz, the Space Pavilion opening ceremony, and the kick-off press conference with ESA Director General Josef Aschbacher.

SpaceX plans to launch its giant Starship rocket this morning (June 6), and you can watch the action live.

After many delays and two scrubbed launch attempts, Boeing’s CST-100 Starliner successfully launched earlier today! The Crewed Flight Test (CFT) took off from Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida, at 10:52 a.m. EDT (07:52 PDT) atop a ULA Atlas V rocket. For this mission, the capsule is carrying two NASA astronauts: Barry “Butch” Wilmore (commander) and Sunita “Suni” Williams (pilot). They are expected to reach the International Space Station (ISS) at 12:15 p.m. EDT (09:15 a.m. PDT) on Thursday, June 6th.

Assuming all goes to plan, this mission will effectively validate the Starliner as part of NASA’s Commercial Crew Program (CCP). Then, we can expect it to make regular deliveries of cargo and crew to the ISS alongside SpaceX’s Crew Dragon spacecraft. This mission is the second time the Starliner has flown to the ISS and the third flight test overall. During the first test flight (OFT-1), which took place back in December 2019, the Starliner launched successfully but failed to make it to the ISS. After making 61 corrective actions recommended by NASA, another attempt was made (OFT-2) on May 22nd, 2022.

#Starliner ascends to the heavens!

Congratulations to @NASA, @BoeingSpace, and @ulalaunch. Today's launch is a milestone achievement for the future of spaceflight.

Butch and Suni—safe travels through the stars. See you back home.
pic.twitter.com/FYRzx7q4tN

— Bill Nelson (@SenBillNelson) June 5, 2024

Though two of the spacecraft’s thrusters failed during the flight, the spacecraft managed to reach the ISS and delivered 227 kg (500 lbs) of cargo. After nearly two years of delays, another attempt was made on June 1st, but the launch was scrubbed 3 minutes and 50 seconds before liftoff due to a faulty power supply. But, as they say, the third time is the charm! The launch was followed by a NASA news conference at the Kennedy Space Center in Florida, beginning at 12:30 a.m. EDT (09:30 a.m. PDT), which NASA live-streamed via NASA+, the NASA app, YouTube, and the agency’s website.

The conference was chaired by NASA Administrator Bill Nelson, Associate Administrator Ken Bowersox and Deputy Associate Administrator Joel Montalbano (NASA’s Space Operations Mission Directorate), Manager Steve Stitch and Mark Nappi (the manager and VP and program manager of CCP), and ULA president and CEO Tory Bruno. You can check out the recap here:

NASA+ will also cover the Starliner‘s approach to the ISS, starting at 09:15 a.m. EDT (06:15 PDT) on June 6th.

Further Reading: NASA

The post Starliner Finally Launches, Carrying Two Astronauts Into Orbit appeared first on Universe Today.

The European Space Agency has retired its Ariane 5 rocket, and all eyes are on its next generation, Ariane 6. The rocket’s pieces have been arriving at the Kourou facility in French Guiana and are now assembled.  ESA has now announced they’ll attempt a test launch on July 9th and hope to complete a second flight before the end of 2024. This new heavy-life rocket has a re-ignitable upper stage, allowing it to launch multiple payloads into different orbits.

“Ariane 6 marks a new era of autonomous, versatile European space travel,” said ESA Director General Josef Aschbacher, who announced the launch data at the Innovation and Leadership in Aerospace (ILA) Berlin Air Show on June 5, 2024. “This powerful rocket is the culmination of many years of dedication and ingenuity from thousands across Europe and, as it launches, it will re-establish Europe’s independent access to space. … I would like to thank the teams on the ground for their tireless hard work, teamwork and dedication in this last stretch of the inaugural launch campaign. Ariane 6 is Europe’s rocket for the needs of today, adaptable to our future ambitions.”

An overview of Europe’s new rocket, Ariane 6. Credit: ESA.

Ariane 6 has been in the works since the early 2010s to be a replacement the workhorse Ariane 5, which is no longer in production. Ariane 5’s first successful launch was in 1998, and since then has sent 109 spacecraft on their way, including the first ATV Jules Verne to the International Space Station and the James Webb Space Telescope to the second LaGrange point 1.5 million km (1 million miles) from Earth.

Ariane 6 is an expendable launch vehicle – not reusable like SpaceX’s rockets — that comes in two versions, with a modular design that can be customized: the rocket can use either two or four P120C strap-on boosters, depending on mission requirements. With the various designs, it can put a 4,500 kg payload into a geostationary transfer orbit or 10,300kg into low Earth orbit using the two boosters, and with four side boosters, it can launch 11,500 kg into a geostationary transfer orbit and 20,600kg into low Earth orbit. The re-ignitable upper stage allows for multiple satellites to launch on a single flight.

The Ariane 6 rocket test firing on its launch pad at the European Spaceport in French Guiana. Credit: ESA

Ariane 6 was developed at a cost of just under 4 billion euros ($3.9 billion) and was originally planned for its first launch in July 2020. However, the project has been hampered by several delays, including work-related issues during the Covid-19 pandemic.

The rocket has undergone several tests in the past few years, and in November of 2023, a full fueled Ariane 6 was tested on the launchpad, firing its engines for several minutes, simulating a flight to space.

“The announcement of the scheduled date for Ariane 6’s first flight puts us on the home stretch of the launch campaign and we are fully engaged in completing the very last steps,” said Martin Sion, CEO of ArianeGroup, the prime contractor of the Arian 6. “This flight will mark the culmination of years of development and testing by the teams at ArianeGroup and its partners across Europe. It will pave the way for commercial operations and a significant ramp-up over the next two years. Ariane 6 is a powerful, versatile and scalable launcher that will ensure Europe’s autonomous access to space.”

Part of the first Ariane 6 rocket inside the Vehicle Assembly Building, Kourou, French Guiana earlier in 2024. Credit: ESA/CNES/Arianespace/Arianegroup.

At the Spaceport in French Guiana, various payloads have been integrated on Ariane 6’s payload carrier. One major milestone must be met before launch: a full wet dress rehearsal, which is having a fully fueled vehicle going through all the steps of a countdown, but not the actual ignition of the rocket engines. Once this activity has been completed, the Ariane 6 Task Force will provide an update, confirming the date for the inaugural flight.

The post ESA Sets the Launch Date for Ariane 6: July 9th appeared first on Universe Today.