James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...
Wide binary stars with separation greater than about 2000 astronomical units are interesting natural laboratories that allow a direct probe of gravity at low acceleration weaker than about 1 nanometer ...
Atom interferometry exploits the wave nature of ultracold atoms to measure gravitational acceleration and its spatial variations with exceptional precision. In a typical configuration, laser pulses ...
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Interstellar Object 3I/ATLAS Changed Color Again, And Shows Signs Of Non-Gravitational Acceleration
A team of astronomers monitoring interstellar object 3I/ATLAS have found something a little surprising. Our third confirmed interstellar visitor appears to have changed color for the second time.
Despite dozens of experiments over the years, scientists still don't have a precise measurement for gravity's strength. Why is that?
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