Astronomers have found an extrasolar planet around a main sequence star. Which isn’t a big deal. With a radio telescope. Which is.Over the past couple decades astronomers have spotted thousands of exoplanets using a variety of techniques. There’s the ever-popular transit method, championed by observatories like Kepler and TESS. And there’s also a , which closely monitors the light from a distant star.And then there’s astrometry.Astrometry is the technique of watching a star wiggle back and forth as it’s tugged by the gravity of any orbiting planets. It’s a very precarious measurement...…Astronomers have found an extrasolar planet around a main sequence star. Which isn’t a big deal. With a radio telescope. Which is.Over the past couple decades astronomers have spotted thousands of exoplanets using a variety of techniques. There’s the ever-popular transit method, championed by observatories like Kepler and TESS. And there’s also a , which closely monitors the light from a distant star.And then there’s astrometry.Astrometry is the technique of watching a star wiggle back and forth as it’s tugged by the gravity of any orbiting planets. It’s a very precarious measurement...WW…