premise: Cosmonaut Valery Polyakov set the record for the longest continuous amount of time spent in space, a staggering 438 days, between 1994 and 1995. He orbited the Earth 7000 times, witnessing 7000 sunrises and 7000 sunsets.
hypothesis:  Valery Polyakov spent an incredible, staggering amount of time in space, over two years
reason: 438 days is much less than two years, so my statement is incorrect