Danny uses a computer that Professor Bulfinch has created for NASA to prepare his homework, despite Professor Bullfinch's warning that Danny is to leave the mac

Professor Bullfinch leaves Danny in charge of his new miniature computer.

Professor Bullfinch leaves Danny in charge of his new miniature computer.

Through a mishap in Professor Bulfinch's laboratory, Danny accidentally creates an anti-gravity paint. The natural use, of course, is for a spaceship -- the pai