Member for 6 years, 3 months
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Far far away
Yes, Sun has differential rotation. Movement of Sun spots is one of the proofs that Sun rotates. The differential rotation causes the weird twisted magnetic fields which shows in the Sun's prominence.
Considering the vastness of space, an alien(artificial) signal will have to be pointed in our direction and when it reaches us the strength will be very very small. Natural signals are more pronounced ...
Yes it is possible if you have the probe orbiting the Pluto-Charon system at one their Lagrange points.
There are lot of ifs, buts, sizes, etc to answer: - Any sizable objects entering our solar system will disturb our orbital 'equilibrium'. - First the empty space between the planets is huge, So very ...
Adding to Rob explanation. Once that equilibrium stops the bang happens known as Supernova and for smaller stars(our Sun) they will swell in to Red Giants.
I think the planet's size and it's geological activity will dictate the mountains height. Mars is smaller than Earth and no active core, So has high probability to have mountain like Olympus Mons.