China's Chang 'e-1 lunar exploration satellite was launched in xichang satellite launch center on June 24th, 2007. Before the rocket was ignited, the rocket and the satellite stood quietly.

(2) The mass of the satellite is unchanged, but the speed and altitude are increasing, which leads to the increase of kinetic energy, gravitational potential energy and mechanical energy;

So the answer is: (1) A lot of "white steam" has emerged in the large pool, which is the liquefaction of water vapor in the air;

(2) When the satellite slowly accelerates its vertical ascent, the mechanical energy of the satellite is increasing.