
Copernical Team
100 days of the Minerva mission

ESA astronaut Samantha Cristoforetti was launched to the International Space Station on 27 April as a part of Crew-4 for her second mission, Minerva. One hundred days in, mission Minerva is still going strong. From completing cutting-edge research in the world's only orbiting laboratory to sharing daily life on the Space Station via TikTok, it's all in a day's work for an ESA astronaut.
Inspired by the Roman goddess of wisdom, the handicrafts and the arts, the name Minerva is a homage to the competence and sophisticated craftmanship of the women and men all over the world who make human spaceflight possible. It also embodies the toughness and discipline that is required of us, and the wisdom we wish to demonstrate, as we consolidate and expand human presence in space. All these qualities and more have been on display during these first 100 days of the mission.
Making strides in health
Throughout mission Minerva, Samantha has played a vital role in a large number of scientific experiments on the Space Station, both from European states and international partners.
Image: Pure gold pin for space testing

Although this pure gold pin is not much bigger than the tip of a pencil, it is the "pulsing heart" of ESA's Low Earth Orbit Facility, LEOX. Part of the Agency's Materials and Electrical Components Laboratory, based at ESA's ESTEC technical center in the Netherlands, this test facility is vital for developing materials capable of withstanding the highly-erosive individual oxygen atoms prevailing at the top of the atmosphere, the result of standard oxygen molecules of the same kind found just above the ground being broken apart by powerful ultraviolet radiation from the sun.
All missions that orbit less than about 1,000 km above Earth's surface must be designed to resist atomic oxygen. To realistically simulate the low-Earth orbit environment, the LEOX atomic oxygen facility generates atomic oxygen traveling at 7.8 km/s.
Atomic oxygen is not easy to generate on Earth, because it is so reactive. This means that the materials used to make the simulator must be as robust as the materials flown in space. This sturdy gold pin is used to inject tiny pulses of oxygen gas molecules into a vacuum chamber, where the molecules are split into atoms using a powerful laser.
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