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The discovery in the recent years of thousands of planets around other stars has shown us that planetary systems are common in the Universe. The search for other Earths has become one of the hottest topics in modern astrophysics, motivating the development of new instruments and space missions. Moreover, the detection of new planets more and more similar to Earth opens huge perspectives of one day becoming possible to answer positively to the question “is there life in other places of the Universe?”. On this talk we will address the topic of the search for planets around other stars, the so called extrasolar planets. The techniques most used by astrophysicists to detect these objects will be described in a simple way. Some examples of the results from recent researches will be equally shown. Finally, we will address the future of this exciting scientific topic as well as the participation of Portugal in this quest.