The probe, which launched in 2004, was designed to test the effect Earth's gravity has on the space-time around it. According to Einstein, the Earth warps its local space-time like a bowling ball ...

NASA's Gravity Probe B mission has blasted off successfully and has begun a 44-day period in which it gears up to test Einstein's theory of gravity with exquisite precision. The three-tonne probe ...

After many delays and false starts, Gravity Probe B was finally launched in April 2004. It tested both effects with four gyroscopes consisting of spinning quartz spheres coated with the metal niobium.

Nasa's Gravity Probe B has produced remarkable new confirmation of some key predictions by Albert Einstein. The satellite's observations show the massive body of the Earth is very subtly warping ...

A NASA probe orbiting Earth has confirmed two key predictions of Albert Einstein's general theory of relativity, which describes how gravity causes masses to warp space-time around them. The ...

GOCE, which launched on Tuesday, is set to offer 100-kilometre-resolution maps of Earth’s entire gravity field, the most detailed yet. Its maps could help refine climate change projections and ...