A star that out of the blue becomes much brighter then slowly returns to its original brightness during a period of weeks to many years.
Any sudden brightening of a previously inconspicuous celebrity.
A star which instantly increases in brightness numerous of times, then fades returning to near its original intensity. It might probably appear as a “new” star if its original brightness had been also reasonable for routine observation. A star which all of a sudden increases in brightness to numerous an incredible number of times its initial power is a supernova, together with postulated components the increases of brightness of novae and supernovae are different.
A ‘new’ or short-term celebrity; a star helping to make its appearance abruptly and slowly fades away, the complete decline generally speaking occupying some many years and making the star still visible in large telescopes. About twenty these types of performers have to date been recorded.
a star that ejects a few of its product in the shape of a cloud and start to become much more luminous along the way