We wash our hands after we use the toilet to get rid of the germs, right? But the door knob is the germiest place in the house. We touch the door knob after we exit the bathroom and after we washed our hands. So... does this mean we are getting the germs back that we just washed? Hmmm... please explain

Yes that's true. That's why we have to clean such surfaces regularly with sanitizers and cleaning agents

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d