In 1995, a planet called "51 Pegasi b" was discovered using a technique known as Doppler spectroscopy. How did this discovery change many people's ideas about the solar system?

It marked a turning point and forced astronomers to accept that giant planets could exist in short-period orbits. Once astronomers realized that it was worth looking for giant planets with the currently available technology, much more telescope time was devoted to radial velocity planet searches, and hence many more exoplanets in the Sun's neighborhood were discovered.

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