NASA detects exocomets plunging into a star
NASA's Hubble Space Telescope has detected exocomets (comets outside the solar system) plunging into a young star named 'HD 172555', at around 95 light-years away from Earth. Scientists have suggested that the presence of these comets provides circumstantial evidence for "gravitational stirring" by an unseen Jupiter-sized planet, where comets deflected by its gravity are hurled into the star.