Examine the methods scientists use to search for extraterrestrial life, such as studying exoplanets, extremophiles, and interstellar signals. Discuss the scientific, philosophical, and societal implications of discovering intelligent life beyond Earth.

Specifically, delve into:

* **Exoplanet Research:** Explain how scientists detect and characterize exoplanets, and how they identify potentially habitable worlds.
* **Extremophiles:** Discuss the study of extremophiles on Earth and how they provide insights into the potential for life in extreme environments on other planets.
* **SETI:** Explain the Search for Extraterrestrial Intelligence (SETI) and the methods used to detect signals from alien civilizations.
* **Scientific Implications:** Discuss how the discovery of extraterrestrial life could revolutionize our understanding of biology, evolution, and the origins of life.
* **Philosophical Implications:** Explore the philosophical questions raised by the discovery of extraterrestrial life, such as the nature of consciousness, the meaning of life, and humanity's place in the universe.
* **Societal Implications:** Discuss the potential societal impact of discovering extraterrestrial life, including its effects on religion, culture, and international relations. 
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