The stock market is associated with the highest investment risks. When investing in a stock you are giving money to the company for a small portion of their business. When they loose money, you loose money and when they gain money, you gain money meaning that if they have a large amount of loss you will be loosing a lump-some of money.
There is radiation in space and that is harmful to humans. Space radiation is invisible to the human eye and that makes it even more harmful if we can't even see it.
