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  • Satellites Are Getting a Constellation of Traffic Cops

    Satellites Are Getting a Constellation of Traffic Cops

    Earth’s orbit will be monitored by a watchful set of robotic eyes, the first commercial constellation of satellites with the ability to keep track of objects in space to avoid collisions between spacecraft. Canadian startup NorthStar is getting ready to launch the first four of its Space Situational Awareness (SSA) satellites equipped with advanced optical…


  • Physicists Just Learned Something Major About the Proton

    Physicists Just Learned Something Major About the Proton

    Physics at the smallest scales is a challenge of observation: Particles are often fleeting, and the forces that govern their behaviour are nearly imperceptible. But now, by exploiting decades-old data and a 50-year-old prediction about gravity’s import on subatomic particles, a team of physicists has teased out a measurement for a second mechanical property in…