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What are the medical problems an astrona...

What are the medical problems an astronaut will face when in space for long time while orbiting around a planet in a satellite.

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### Step-by-Step Solution: 1. **Understanding Microgravity Effects**: - In space, astronauts experience microgravity, which is a condition where the force of gravity is significantly weaker than on Earth. This affects various bodily functions and can lead to medical issues. 2. **Bone Density Loss**: - One of the significant problems astronauts face is a decrease in bone density. In a microgravity environment, the mechanical loading on bones is reduced, leading to a condition known as spaceflight osteopenia. This makes bones weaker and more susceptible to fractures. ...
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Knowledge Check

  • The period of a satellite in a circular orbit around a planet is independent of

    A
    the mass of the planet
    B
    the radius of the planet
    C
    the mass of the satellite
    D
    All the three parameters (a), (b) and (c)

  • Which of the following statements are correct about a satellite moving around a planet in an elliptical orbit ?

    A
    Its time period is proportional to `r^(3)`
    B
    Its areal velocuty is constant
    C
    Its angular momentum about every in space is constant
    D
    Its mechanical energy is conserved

  • While orbiting around the earth in a spaceship, an astronaut experiences

    A
    more weight
    B
    lesser weight
    C
    weightless
    D
    nothing at all