7. It has been estimated that Halley's comet has a mass of 1 X 10"' tons.
This comet is estimated to lose 1 X 108 tons of material each time its orbit brings it close to the sun. With an orbital period of 76 years, what is the maximum remaining life span of Halley's comet?

7 It has been estimated that Halleys comet has a mass of 1 X 10 tons This comet is estimated to lose 1 X 108 tons of material each time its orbit brings it clos class=