Person/Expert you admire

The universe it's something endlessly, we know just a few things about them, there are many things that have't been discovered yet, so we are learning everyday new stuff about the universe.

One of the guys who made important contributions to science it's Carl Sagan (1934-1996), he was an american astronomer,  astrophysicist, astrobiologist and other things related to the outer space research. He contributed with investigations about extraterrestrial life, and one of the most important, was about the production of amino acid from basic chemicals by radiation. In my personal opinion, he is one of the most relevants and complete scientifics of the "new era" 

He was  a pioneer in exobiology, a science that studies the presence of life in the outer space, but it's just based on theorys by now, because there isn´t enough evidence to demonstrate the existence of life in the outer space.

And he also helped to discover the high temperatures of Venus, he basically studied the radio waves irradiated by Venus, and with other relevant information, he determined that the Temperature of Venus it's approximately 380 °C.

I admire him because he dedicated his life to study the biology in the outer space, and he also was one of the creators of the exobiology, it's important to recall that the exobiology it's a mix of astrophysics, biology and geology, so that make it a hard science to study and understand. There is something i forgot to say before, he also has a book and a documentary, both with the same name "Cosmos". I saw the documentary and i have to say that it's very interesting and the most important, it's inspiring.