why do you think only solar cells and not dry cells or automobile batteries are used in satellites?

How would you recharge the dry cells?

Because the others require a medium in order to transmit and receive the signals from outer space

because they have more power and energy and they sustain for long time

Nothing

Solar cells are predominantly used in satellites for several reasons. Firstly, satellites orbiting the Earth are exposed to direct sunlight for a significant portion of their journey. Solar cells harness the energy from sunlight and convert it into electricity, making them an ideal choice for powering satellites.

Here are a few reasons why solar cells are preferred over dry cells or automobile batteries in satellites:

1. Continuous Power Generation: Solar cells can constantly generate electricity as long as they are exposed to sunlight, providing a consistent power source for satellites. In contrast, dry cells have a limited lifespan and need to be replaced or recharged, which is not feasible in the vastness of space.

2. Weight Considerations: Satellites require lightweight and compact power sources to reduce the overall mass of the spacecraft. Solar cells are relatively lightweight compared to traditional batteries, making them more practical for space missions where weight is a critical factor.

3. Efficiency: Solar cells have a high energy conversion efficiency, enabling them to generate a significant amount of electricity from the available sunlight. This is crucial for satellites, as they need to maximize power generation in order to power their various systems and carry out their intended functions.

4. Environmental Factors: In space, extreme temperatures and vacuum conditions can affect the performance and overall lifespan of batteries. On the other hand, solar cells are designed to operate in such demanding environments and are more resilient to these conditions.

Though dry cells and automobile batteries have their own advantages, such as portability and high energy density, they are not well-suited for the unique requirements and harsh conditions of space missions. Therefore, solar cells remain the primary choice for powering satellites.