... Tonight's Sky . ... DISK т?? ... Observing . ... Star ends infancy abruptly . ... The existence of this large gap, which is about the size of the orbit of Saturn, supports the theory that this young star ended its infancy abruptly, by ionizing and pushing away the gas in the disk from which it was born. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...