<human>:  How do astronomers look for new planets beyond our solar system?
<bot>: Astronomers look for new planets beyond our solar system by using telescopes and observing slight changes in light coming from distant stars. They search for regular patterns of dimming and brightening that could indicate the presence of an orbiting planet. Astronomers can also use indirect methods to detect planets, such as measuring changes in star velocities due to the gravitational pull of planets.