This is a very interesting topic. Because it depends on how we are defining the planet.
If the Moon or Mars were the size of an asteroid let’s say a spherical object with a diameter of about 1 km. Then, Yes.
But if they were large enough to be orbiting in “a clearly distinguishable orbit” around the most powerful star closest to us (Sun). Then it is Impossible.
Any such planet or a satellite to a planet will have a very strong gravity making it impossible. Following are the reasons:-
– Its gravity will destroy any object/rover approaching at a slow speed, like we see the dust on the rings of Saturn.
– To avoid this, we could increase the mass of the object/rover and send it at a very high speed. But then its acceleration will increase the speed further when it moves closer into the planet’s orbit. Making it certain to crash.
– If somehow after moving a heavy object/rover at a fast speed, we magically reduce its speed just above the surface. Then the problem will happen after we land on its surface.
– As the object was made very heavy to avoid the “roche effect”. It will sink inside the planet’s surface slowly just like objects sink inside an ocean.
– Let’s assume, we again magically reduce the weight after we land on the surface. Even then it will not be possible to keep it afloat and working for a long period of time. As there are no humans or factories there to replace or fix a machine.
– Lets again assume that we are sending many machines and also humans. This will only increase death and failure. Also please note that I have not talked about food, water and temperature differences till now there.
So it won’t be possible to land a rover or human on Mars or Moon.
Satellites and the ISS are the only working solution in space exploration. The younger generation needs to understand the difference between fantasy and reality.
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