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Kilometer-Long Space Tether Tests Fuel-Free Propulsion

A massive cloud of space junk—containing more than 23,000 pieces larger than 10 cm across—is currently zooming around Earth with an average speed of about 36,000 km per hour. And as companies such as SpaceX and OneWeb plan to launch tens of thousands of new satellites over the next few years, this hazardous clutter will

Why Nuclear is an Emerging Technology for the Space Economy

Nuclear energy has played a key supporting role in historic missions to Mars, Pluto, and across the Solar System for the last 50 years. On January 1 2019, the nuclear-powered New Horizons flew by the most distant object ever observed up close – Ultima Thule, after it having already flown by Pluto in 2015. Nuclear