The possibility of direct accretion of interstellar matter by the Sun is considered as a source of material for a solar disk as the initial stage of planet formation. The existing mass and angular momentum require a size and density of the cloud in close agreement with observed values. The range of action of the Sun would require a relative speed of about 0.2 km sec −1 , and such a speed would have high probability of occurring at some time for any star over a period of several aeons. The amount of material falling directly into the Sun would probably be so small as to bring negligible angular momentum to it. The hypothesis would allow an origin for the planetary material quite separate from the Sun, and also would imply (assuming that a disk so formed would develop into planets) that a large proportion of old stars may have attendant planets. Besides resting on more secure hypotheses, a disk so formed would appear quite as suitable a source for planets as one relying on magnetic-coupling to the Sun for its formation.