It is also theoretical. Astronomers infer the Oort Cloud is there because it’s the only logical explanation for the arrival of a certain class of comets that sporadically visit our solar system. The ...
During the comet’s closest approach, Johnston — who sourced a model suggesting 7:12 a.m. to 8:06 a.m will be its brightest times — estimates it “will be bright enough to see during the daylight for ...