Quantum sensors for GPS-free orientation

How can we navigate airliners or allow military vehicles to stay on course without GPS or satellite signals? This is a problem for which quantum inertial sensors offer a solution. Harnessing quantum technology, they can take ...

A new space race? China adds urgency to US return to moon

It's not just rocket fuel propelling America's first moonshot after a half-century lull. Strategic rivalry with China's ambitious space program is helping drive NASA's effort to get back into space in a bigger way, as both ...

What is the maximum number of moons that Earth could have?

In a recent study published in Earth and Planetary Astrophysics, a team of researchers from the University of Texas at Arlington, Valdosta State University, Georgia Institute of Technology, and the National Radio Astronomy ...

Triply eclipsing stellar systems

Stars with the mass of the sun or larger are typically accompanied by one or more orbiting companion stars. The system forms when gravity contracts the gas and dust of an interstellar cloud until clumps develop that are dense ...

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