Face to face with sun-eclipsing Proba-3

Through exquisite, millimeter-scale, formation flying, the dual satellites making up ESA's Proba-3 will accomplish what was previously a space mission impossible: Cast a precisely held shadow from one platform to the other, ...

PACE testing and preparation continues for launch in early 2024

Engineers are executing a comprehensive performance test to ensure the PACE spacecraft is ready for launch. NASA's Plankton, Aerosol, Cloud ocean Ecosystem (PACE) mission will study what makes Earth so different from every ...

Paper explores ideal orbits for space-based interferometers

Ever since the telescope was invented in 1608, astronomers have striven for bigger and better telescopes. When it comes to instruments to observe the sky, bigger really is better whether you are observing faint galaxies or ...

Telescope Array detects second-highest-energy cosmic ray ever

In 1991, the University of Utah Fly's Eye experiment detected the highest-energy cosmic ray ever observed. Later dubbed the Oh-My-God particle, the cosmic ray's energy shocked astrophysicists. Nothing in our galaxy had the ...

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