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Ae inflatable habitats the future of human space exploration? This is what the space-tech company, Sierra Space, hopes to achieve as they recently conducted a successful Ultimate Burst Pressure test on June 18 with its Large Integrated Flexible Environment (LIFE®) technology at NASA’s Marshall Space Flight Center. The goal of these tests is to inflate the test article until it explodes while ascertaining if the maximum pressure falls within NASA’s strict safety guidelines regarding a recommended operating pressure of 60.8 psi (maximum operating pressure of 15.2 psi times four as a safety factor). Upon explosion, Sierra Space engineers immediately found the recent test achieved 74 psi, thus exceeding NASA’s safety standards by 22 percent. “We are 100 percent committed to maintaining U.S. leadership in Low Earth Orbit. Sierra Space is leading the way with the first commercial space station to replace the International Space Station when it is decommissioned and ensure there is no gap in LEO,” said Sierra Space CEO Tom Vice. “Our revolutionary, expandable space station technology reinvents the space station. Our technology, for the first time, will enable the right unit economics that will usher in the full commercialization of space. Our biotech and industrial partners will utilize our factories of the future to innovate new products that will massively disrupt terrestrial markets and benefit life on Earth.” This recent test marks the technology’s second full-scale structural test and seventh key validation test, which comes after Sierra Space successfully conducted its first full-scale burst test in December 2023, achieving 77 psi and exceeding NASA’s safety standards by 27 percent. Both test units stood at more than 6 meters (20 feet) in height and had volumes of 300 m3 (10,594 ft3), or approximately 1/3rd of the pressurized volume of the International Space Station (ISS). Sierra Space is now planning for the first test of its 500 m3 (17,657 ft3) space station technology in 2025, which will be 55 percent of the pressurized volume of the ISS. December 2023 burst test of the Large Integrated Flexible Environment (LIFE®) “No other company is moving at the speed of Sierra Space to develop actual hardware, stress-tested at full scale, and demonstrate repeatability. We’ve taken a softgoods system that very few companies around the world have been able to design, and now we have consistent, back-to-back results,” said Shawn Buckley, VP of Earthspace Systems, Space Stations, at Sierra Space. “A second successful full-scale test is an absolute game changer. We now know it’s possible to equal or surpass the total habitable volume of the entire International Space Station, in a single launch.” While these two recent tests were conducted at full-scale, Sierra Space conducted two sub-scale burst tests in July 2022 and November 2022, achieving maximum pressures of 192 and 204 psi, respectively, with NASA’s safety standards being 182.4 psi given the sub-scale sizes, thus both tests successfully exceeding these safety standards. July 2022 sub-scale burst test November 2022 sub-scale burst test Sierra Space stated in June 2023 that they hope to launch a “pathfinder” version of the LIFE® habitat in 2026 with the goal of the technology being an essential piece to the Orbital Reef commercial space station, with the latter scheduled to be operational in 2027. Given its size, Sierra Space estimates the LIFE® habitat can comfortably accommodate four astronauts with the remaining volume being used for science experiments, exercise equipment, small medical facilities, and the Astro Garden® system, which can potentially grow food in space and has previously undergone testing at the Sierra Space Madison WI facility. This comes as numerous commercial space companies are attempting to launch their own space stations, including the Axiom Station, Starlab Space Station, Haven-1, and the aforementioned Orbital Reef space station. Additionally, this also comes as NASA announced their plans to “retire” the ISS in 2030, although the agency announced in a July 2024 white paper that they will evaluate the possibility of extending the lifetime of the ISS if no commercial space stations are able to accommodate space-based research at that time. How will Sierra Space’s Large Integrated Flexible Environment (LIFE®) technology help advance human space exploration in the coming years and decades? Only time will tell, and this is why we science! As always, keep doing science & keep looking up! The post Watch an Inflatable Habitat Burst in Super Slo-Mo appeared first on Universe Today.

While black holes are known as the most destructive objects in the universe, their evolution is largely shrouded in mystery. This is because while astronomers are familiar with supermassive black holes that exist at the center of galaxies like our own and black holes whose masses are less than 100 times the size of our Sun, the notion of intermediate-mass black holes (IMBHs) have largely eluded discovery. However, this might change with the recent discovery of a black hole candidate that could exist within the globular cluster, Omega Centauri, and holds the potential to be the “missing link” in scientists better understanding black hole evolution. For the discovery, an international team of researchers used the Hubble Space Telescope and spent approximately 20 years examining more than 500 images of seven fast-moving stars that lie within Omega Centauri, which is located just over 17,000 light-years from Earth and estimated to be just over 11.5 billion years old. A possible reason for the lengthy research time is because Omega Centauri is estimated to contain approximately 10 million stars, each with an average mass of four of our Suns, with the globular cluster being approximately 150 light-years in diameter. “We discovered seven stars that should not be there,” said Maximilian Häberle, who is a PhD student at the Max Planck Institute for Astronomy in Germany and the investigation lead. “They are moving so fast that they should escape the cluster and never come back. The most likely explanation is that a very massive object is gravitationally pulling on these stars and keeping them close to the center. The only object that can be so massive is a black hole, with a mass at least 8200 times that of our Sun.” For context, the supermassive black hole at the center of our galaxy is approximately 4.3 million times the mass of our Sun, which could put this black hole candidate in the “intermediate range” based on what scientists know about smaller black holes being less than 100 times the mass of our Sun. However, the only other study that suggested the existence of an IMBH within Omega Centauri was in 2008, so this latest discovery will require further examination as the researchers have yet to determine this candidate’s exact mass and position within Omega Centauri. “This discovery is the most direct evidence so far of an IMBH in Omega Centauri,” said Dr. Nadine Neumayer, who is a scientist at the Max Planck Institute for Astronomy and who began the study. “This is exciting because there are only very few other black holes known with a similar mass. The black hole in Omega Centauri may be the best example of an IMBH in our cosmic neighborhood.” This new candidate continues a long list of potential IMBH discoveries dating back to 2004, with no definitive confirmations being made to this day. Additionally, given this potential IMBH is located just under 17,000 light-years from Earth, if confirmed, could be the closest black hole to Earth, beating out the supermassive black hole residing at the center of our galaxy, which is approximately 27,000 light-years away. As noted, black holes are known as the most destructive, yet most mysterious, objects in the universe. This is because they can’t be directly observed and are only detectable when they consume an object in their surrounding environment, most often a star. However, once detected, astronomers can learn much about their behavior, which includes the production of gravitational waves when two black holes merge, as was discovered in 2016. Additionally, their evolution remains a mystery, as astronomers have debated for decades regarding how black holes form, evolve, and even die. Therefore, confirming the existence of the first IMBH could bring astronomers one step closer to better understanding black hole evolution throughout the universe. How will IMBHs help astronomers better understand black hole evolution in the coming years and decades? Only time will tell, and this is why we science! As always, keep doing science & keep looking up! The post Finally! Astronomers Find the Missing Link Between Stellar and Supermassive Black Holes appeared first on Universe Today.

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The California Supreme Court ruled Thursday that Proposition 22 – the ballot measure that passed in November 2020 and classified app-based gig workers as independent contractors rather than employees – is here to stay. The decision is a win for app-based companies like Uber, Lyft, DoorDash and Instacart, which have fought hard to maintain their business models that rely on gig workers to give passengers on-demand rides and deliver food and other goods. “Whether drivers or couriers choose to...