Personally I think this is really quite awesome.
Astrometry is a branch of astronomy dealing with the measurements and movements of planets and stars, as they move around do a bit of a tango with each other as they move around. The other methods used for detection are radial velocity or transits.
But it was published yesterday that a team from the Jet Propulsion Laboratory labs at NASA have used a number of measurements over the past 12 years to find a planet about the size of Jupiter from the pull it has on of its star (
VB 10), the movements are a mere 1/6th of an arcsecond each year.
Really impressive
Source:
Planet-Hunting Method Succeeds at Last - NASA Jet Propulsion Laboratory 
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