Why did engineers need to design a sunshade for mercury messenger?

They designed one cause of the sun powerful radiant energy and thermal they needed to protect the satellite from being disintegrated when it gets close to the sun its also the closet plant to the sun MVEMJSUN is a mnemonic device I made up it means my very energetic mother just served us nachos or that's what I say and that is your answer bam

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.