Connect with us

Published

on

The United States will on Wednesday carry a Russian to the International Space Station aboard a SpaceX ship, in a voyage that carries symbolic significance amid the Ukraine war.

Anna Kikina, the only female cosmonaut in service, is part of the Crew-5 mission, which also includes one Japanese and two American astronauts.

Blast-off is set for noon from the Kennedy Space Center, with the weather forecast so far promising.

Two weeks ago, an American astronaut took off on a Russian Soyuz rocket for the orbital platform.

The long-planned astronaut exchange program has been maintained despite soaring tensions between the two countries since Moscow’s invasion of Ukraine in February.

Ensuring the operation of the ISS has become one of the few remaining areas of cooperation between the United States and Russia.

“When you each are flying other’s crew members, you know that you have a huge responsibility that you’re promising to the other country,” NASA associate administrator Kathy Lueders told reporters in a recent press conference.

“At a working level, we really appreciated the constancy in the relationship, even during some really, really tough times geopolitically.”

Fifth female cosmonaut

Kikina, 38 and an engineer by training, will become the fifth Russian female professional cosmonaut to go into space.

“I hope in the near future we have more women in the cosmonaut corps,” the Novosibirsk native told AFP in August.

The Soviet Union put the first woman in space, Valentina Tereshkova, in 1963, nearly 20 years before the first American woman Sally Ride. Since then, America has flown dozens more women.

It will also be the first spaceflight for American astronauts Nicole Mann and Josh Cassada, but the fifth for Japan’s Koichi Wakata.

After a journey of about 30 hours, their ship will dock with the station on Thursday, ready to begin a five-month science mission and relieve the four members of Crew-4, who will stay a few days for handover.

Crew-5’s arrival will bring the total number of astronauts on the ISS to 11, including two other Russians and an American who arrived on the recent Soyuz.

ISS future unclear

Kikina will be the first Russian to fly with Elon Musk’s SpaceX which, along with Boeing, has a “taxi service” contract with NASA.

Musk himself waded into the conflict Thursday by proposing a peace deal that involved re-running, under UN supervision, annexation referendums in Moscow-occupied regions of Ukraine and acknowledging Russian sovereignty over the Crimean peninsula.

The post enraged Ukrainians, including the country’s envoy to Germany, who responded with an expletive.

Tensions between Moscow and Washington have increased considerably in the space field after the announcement of American sanctions against the Russian aerospace industry, in response to the invasion of Ukraine.

Russia thus announced this summer that it wanted to leave the ISS “after 2024” in favor of creating its own station, albeit without setting a precise date.

The director of manned flights at Roscosmos, Sergei Krikaliov, declared Monday he hoped the Russian government agrees to extend participation in the ISS after 2024.

The United States, for its part, wants to continue operating until at least 2030, then transition to commercially run stations.

As things stand, the ISS cannot function without joint cooperation, as the US side is responsible for power and life support and the Russian side for propulsion and maintaining orbit.

Between 2011 — when the Space Shuttle program ended — and SpaceX’s first flight to the ISS in 2020, the United States was dependent on Russia for flying its crew to the station, paying tens of millions of dollars per seat.

The loss of this monopoly represents a significant income reduction for the Russian space program. The current crew exchange program, by contrast, is a barter-based agreement with no exchange of money.


Affiliate links may be automatically generated – see our ethics statement for details.

Continue Reading

Science

NASA Astronaut Sunita Williams Refutes Health Concerns Amid ISS Mission

Published

on

By

NASA Astronaut Sunita Williams Refutes Health Concerns Amid ISS Mission

NASA astronaut Sunita Williams has recently addressed speculations surrounding her health condition while on the International Space Station (ISS), discarding recent claims made by media outlets regarding her wellbeing. In response to reports that suggested she appeared “gaunt” due to an extended stay on the ISS, Williams clarified her status during a video interview on November 12, explaining that her weight has remained unchanged since her arrival in orbit.

Routine Exercise and Physical Adaptations

Williams, who commands Expedition 72 aboard the ISS, responded to health concerns publicly, indicating that any changes in her physical appearance are the result of rigorous exercise routines rather than health deterioration. Like all astronauts on extended missions, she has been following an intense workout regimen designed to counteract the muscle and bone density loss commonly associated with prolonged microgravity exposure. Williams stated that her routine includes running on a treadmill, riding an exercise bike and lifting weights. It is a form of exercise that has led to increased muscle mass, particularly in her thighs and glutes, while her overall weight remains consistent.

NASA’s Statement on Crew Health

NASA had previously denied the reports, emphasising that Williams and her fellow crew members, including NASA astronaut Butch Wilmore, are in good health. Williams and Wilmore, who arrived at the ISS on June 6 aboard Boeing’s Starliner capsule, were initially scheduled for a ten-day mission under the Crew Flight Test programme. Technical issues with Starliner’s thrusters led NASA to extend their stay on the ISS until early 2025, when they are expected to return with SpaceX’s Crew-9 mission astronauts.

Current ISS Crew Status

The current ISS team, led by Williams, includes three NASA astronauts and three Russian cosmonauts, all working collaboratively despite recent media scrutiny. Williams assured viewers that her health and morale remain robust as the crew carries out essential research and maintenance tasks on the orbiting laboratory showing NASA’s confidence in their well-being during extended missions.

Continue Reading

Science

Math reveals secrets to gaining height on a half-pipe

Published

on

By

Math reveals secrets to gaining height on a half-pipe

A recent study reveals how skateboarders can use mathematical insights to increase their speed and height on half-pipes. Florian Kogelbauer, a mathematician from ETH Zurich, and his research team have examined how specific movements impact a skateboarder’s performance on U-shaped ramps. By alternating between crouching and standing in certain areas, skaters can generate extra momentum, leading to higher jumps and faster speeds. This research, published in Physical Review Research, could lead to more efficient techniques for skaters aiming to improve their skills.

Modelling Momentum on Half-Pipes

The research was published in American Physical Society Journal. The technique of “pumping,” or alternating between crouching and standing, is essential for building speed on half-pipes. Kogelbauer’s team created a model to show how the body’s centre of mass affects movement on a ramp, much like the mechanics of a swing. In their calculations, they found that crouching while moving downhill and standing while moving uphill helps skaters gain height more effectively. This rhythm, the team suggests, could help skaters reach higher elevations on the ramp in fewer motions.

Testing the Theory with Real Skaters

To test the model’s validity, researchers observed two skateboarders as they navigated a half-pipe. They were asked to reach a specific height as quickly as possible. Video analysis revealed that the more experienced skater naturally followed the model’s suggested pattern, reaching the target height with fewer motions. The less experienced skater, who did not follow the pattern as precisely, required more time to reach the same height. This contrast suggests that experienced skaters intuitively apply these principles for better performance.

Broader Applications Beyond Skateboarding

According to Sorina Lupu, an engineer at the California Institute of Technology, this simplified model may also have applications in robotics. By demonstrating how minimal adjustments in body position can impact speed and height, this study offers insights that could make robotic movement more efficient. For engineers, this research indicates that straightforward models of human movement could be used to enhance robotic performance, providing an alternative to complex machine-learning models often used in robotics.

Continue Reading

Science

Global Fossil CO2 Emissions Hit Record in 2024

Published

on

By

Global Fossil CO2 Emissions Hit Record in 2024

Global carbon emissions from fossil fuel combustion have reached an unprecedented peak in 2024, with the Global Carbon Project reporting a projected 37.4 billion tonnes of fossil CO2 emissions, a 0.8% increase from 2023. The report underscores an urgent call for emissions reduction as the world’s annual output of CO2 from fossil fuels and land-use changes collectively approaches 41.6 billion tonnes. Despite increased efforts to mitigate climate impacts, there are no clear signs of a peak in global fossil CO2 emissions, heightening the risk of surpassing critical climate thresholds.

Sector-Specific Emissions and Regional Insights

As per a report by University of Exeter, emissions from fossil fuels, including coal, oil, and gas, are anticipated to rise in 2024, accounting for 41 percent, 32 percent, and 21 percent of fossil CO2 emissions, respectively. Coal emissions are expected to increase by 0.2 percent, oil by 0.9 percent, and natural gas by 2.4 percent. On a regional level, China, responsible for 32 percent of global emissions, is projected to see a slight increase of 0.2 percent, while emissions in the United States are expected to fall by 0.6 percent.

The European Union’s emissions are forecasted to decrease by 3.8 percent, whereas India, contributing 8 percent of global emissions, is projected to experience a 4.6 percent rise. Emissions from aviation and shipping sectors are also set to increase by 7.8 percent this year, though they remain below pre-pandemic levels.

Carbon Budget and Climate Warnings

According to Professor Pierre Friedlingstein from the University of Exeter, who led the study, the absence of a peak in fossil CO2 emissions further reduces the remaining carbon budget needed to keep warming below the Paris Agreement’s 1.5-degree Celsius target. At the current emission rate, a 50 percent probability exists of surpassing this threshold within the next six years. Meanwhile, Professor Corinne Le Quéré of the University of East Anglia acknowledged ongoing efforts in renewable energy deployment and reduced deforestation but stressed that substantial emissions reductions are still essential.

Urgency for Accelerated Action

The report emphasises that while some nations demonstrate progress in emissions reduction, these efforts have not been sufficient to reverse the overall global trend. Dr Glen Peters from the CICERO Center for International Climate Research noted that global climate action remains “a collective challenge,” with gradual declines in emissions in certain regions counterbalanced by increases elsewhere.

Continue Reading

Trending