Rolls-Royce has secured a contract to provide 50 mtu Series 4000 engines for high-speed trains in Saudi Arabia.The post Rolls-Royce wins mtu engines contract for Saudi Arabia’s high-speed trains appeared first on Railway Technology.
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NASA’s Bennu Samples Reveal Complex Origins, Dramatic Transformation
Asteroid Bennu, sampled by NASA’s OSIRIS-REx mission in 2023, is a mixture of dust that formed in our solar system, organic matter from interstellar space, and pre-solar system stardust. Its unique and varied contents were dramatically transformed over time by interactions with water and exposure to the harsh space environment. These insights come from a trio of newly published papers based on the analysis of Bennu samples by scientists at NASA and other institutions.