The generation of money is linked to the generation of asset bubbles. Due to globalisation the impacts of economic or financial crises, which originate due to bubble bursts, often manifest themselves in the whole world. The goal of this study is therefore the analysis of the definition of what is an asset bubble, because that definition is not uniformly agreed upon by all authors and also changes with time so specific deviations can be observed in the works of individual experts. A partial aim of this study is then to assess the impacts of the bubble burst and the subsequent financial crisis, which originated in the U.S. in 2007, for global economy. It was found out by literary researches that the definition of a bubble burst is not unambigous and that there are many means of appreciating financial assets. Technical, fundamental and psychological analyses were introduced. The consequences of The United States subprime mortgage crisis have deep impacts on the american economy. However, the issue was not confined only to the U.S. but real impacts were observed worldwide.