What makes a quantum computer good?

ESA astronaut Marco Sieber's recent CAVES training in the Apennines of Italy highlights the importance of preparing for future space missions. This unique training program, which takes place in underground caves, helps astronauts develop essential skills for exploring other planets. By simulating the challenges of space exploration in such environments, Sieber and his colleagues are better equipped to handle the unknowns of the cosmos. This initiative not only enhances astronaut training but also emphasizes the significance of teamwork and problem-solving in extreme conditions.

A groundbreaking hydrogen battery has been developed that can function at temperatures four times colder than previous models, allowing for denser and longer-lasting electric vehicle batteries. This innovation is significant because it could revolutionize the way hydrogen is utilized as an energy source, making it more efficient and practical for widespread use in the automotive industry.

The UK government has given the green light to what is being touted as the largest solar farm in the country, which is expected to generate enough energy to power around 300,000 homes. This significant development not only highlights the UK's commitment to renewable energy but also represents a major step towards reducing carbon emissions and combating climate change. With the increasing demand for sustainable energy solutions, this solar farm could set a precedent for future projects and inspire further investments in green technology.

Citizen scientists have made an exciting discovery by identifying three new odd radio circles (ORCs) linked to giant, active galaxies. This finding is significant as it provides astronomers with valuable insights into the formation of these mysterious cosmic structures, enhancing our understanding of the universe.

A recent study by S. Routh and colleagues sheds light on the differential rotation of the Sun, a key aspect of solar dynamics. By integrating EUV observations with Nobeyama 17 GHz data, the researchers have provided new insights into large-scale flows in the chromosphere. This research is significant as it enhances our understanding of solar behavior, which can impact space weather and satellite operations on Earth.

A recent satellite photo from 2025 reveals the Yarlung Zangbo River in Tibet, showcasing its unique braided structure and significant changes over the decades. This transformation is not just a visual spectacle; it highlights the potential impacts of climate change on one of the world's highest rivers. As the river continues to evolve, understanding these changes is crucial for environmental monitoring and climate adaptation strategies.