Are We Alone?

by Calvin Liu on September 18, 2017 - 10:35pm

Every year, scientists add new fascinating species into the encyclopedia of life. As a Harry Potter's fan, one little creature discovered this year, Gryffinfor's Hat amazed me! All this new discoveries are made on the surface of our planet Earth, and despite the huge number of discoveries every year, we are far from finding everything. Now, imagine if we find another planet with different environment where life develops separately from Earth. This could change radically our taxonomy. In this article "Looking for life in all the right places" chosen from NASA, we can see that space exploration has an important place in our society. NASA created an exoplanet program to find signs of life in other planet. A technique used by NASA in order to find essential atoms for life such as oxygen, carbone and hydrogen is spectroscopy. They analyze the color and the wavelength emitted by the planet to determine the presence of specific atoms. However, we don't really know how is life on other planet. We expect something similar to us, but maybe life on other planet is based on different combinations of molecules than on Earth, and we could never discover this mystery!

 

https://exoplanets.nasa.gov/the-search-for-life/life-signs/

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