Final answer:
On Europa, a 90 kg astronaut would weigh approximately 15 kg.
Step-by-step explanation:
Europa is one of Jupiter's moons and has a weaker gravitational force compared to Earth. The weight of an object is determined by its mass and the strength of the gravitational force acting on it. On Europa, an astronaut weighing 90 kg on Earth would experience a gravitational force that is about 1/6th of Earth's gravity, resulting in a weight of approximately 15 kg.
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