Uncategorized
- Astronomy
Sundancing
Astronomers have solved the mystery of why supergranules—enormous cells of turbulent, charged gas on the sun's surface—appear to move across the sun faster than the sun rotates.
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19161
You are usually pretty good at explaining things to those of us outside the hard sciences, but the speed of gravity? Speed of light OK, but what is the speed of gravity? Robert L. SchragNorth Carolina State UniversityRaleigh, N.C. An object with mass creates a gravitational field around itself. Imagine that the object moves; then, […]
- Physics
Clocking gravity
The first attempt to measure the speed of gravity finds it roughly equal to that of light, as expected, though not everyone agrees that the method used can actually measure gravity's speed.
