Derek Velzy's Blog (3)

Europa, Enceladus, and Titan

Based on recent readings, especially from Christopher McKay in How to Search for Life on Other Worlds, I’ve come to believe that life only needs the right combination of three main requirements: a main solvent to host chemical reactions (ours on Earth being water), a mixture of common building-block elements (Carbon, Hydrogen, Oxygen, Phosphorus, Nitrogen, Sulfur are examples of this), and enough energy to cause chemical reactions.  In Astrobiology lecture, we have discussed life…

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Added by Derek Velzy on March 22, 2018 at 6:49pm — No Comments

The Most Adaptable Species

When we think of the most adaptable species, what comes to mind? Camels are able to survive without food or water for months, cockroaches are said to have survived the atomic bombs on Hiroshima and Nagasaki in World War II, and Emperor Penguins are able to make journeys 60+ miles long with their last meal being four months earlier. All of these species are very well suited towards their particular environment, but if one were to put a camel in Antarctica, or an emperor penguin in the Gobi…

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Added by Derek Velzy on February 3, 2018 at 1:12pm — No Comments

Why Limit Our Definitions?

Astrobiologists, amongst other biological scientists, have not yet settled on a standard definition for what they consider to be life; this is because there are so many loopholes and exceptions to each new definition-theory that we come up with. To a FAR lesser degree it is almost like trying to come up with a standard definition of a hamburger. Is it two separate bread buns with a beef patty in the center? What about protein style at In-N-Out where the buns are replaced by a lettuce wrap?…

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Added by Derek Velzy on January 18, 2018 at 5:59pm — No Comments

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Started by Gina Misra in SAGANet Discussions. Last reply by Peter Rasenberg Sep 1. 198 Replies

If you are trying to ask a question live during Ask an Astrobiologist, please do so in the main chatroom at the bottom of the screen! You can also ask on twitter @saganorg…Continue

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