Space science

Laser guide star for tracking space junk, developed by Electro Optic Systems together with the Australian National University. Credit: Electro Optic Systems

Illuminating the space junk problem

Benjamin Skuse explores photonics-based efforts to track, and possibly even remove, debris from the very crowded region of near-Earth space

Measuring ripples in space-time

The European Space Agency is developing a space satellite to measure gravitational waves based on laser interferometry. Greg Blackman speaks to Dr Peter Weßels at Laser Zentrum Hannover, who is designing the fibre amplifier qualification model for the project

Collision course avoided

Greg Blackman speaks to Dr Richard Fork at the University of Alabama in Huntsville (UAH), about his work into developing a laser-based method to stop asteroids colliding with Earth

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