Alternative Time Scales for Life

People tend to believe that aliens and other life forms would be similar to life on Earth, in that it would have cells, need water, be carbon-based, etc. However, after reading about alternative biochemistry, it makes you wonder what else could be different for other life forms.

Life is simply a series of structures or patterns that continue to exist because they are self-replicating. This might sound cynical, but consider that species, through evolution, all have the “goal” of further propagating themselves. Species that no longer reproduce cease to exist.

So here’s the idea: What if there were forms of life, elsewhere in the universe, that lived in vastly different time scales? For example, most life on Earth “happens” at a certain speed, based on the rate of the specific chemical reactions that are taking place. But, if life relied on vastly different chemicals or occurred in different conditions, there would also be the possibility that the chemical processes for this life could happen at different rates. For example, on a planet with very low energy input, a different kind of life might accumulate energy more slowly, move more slowly, and live more slowly. Their lives might span thousands of years. Or, on the opposite extreme, life in high temperatures/pressures might have a life cycle of seconds. Just an interesting thought.

NASA VIP tour and Director’s Breakfast (Science Fair special prize)

Yesterday I attended the VIP tour and Director’s Breakfast at the NASA Ames Research Center. This was the special award I’d won at the science fair this year. I brought my dad as a guest. I had also wanted to invite a friend, but since STAR testing was happening I don’t think anyone would have been able to go. [irked]

We arrived at 7:40 AM, twenty minutes earlier than we intended. That was because we had expected there to be a lot of traffic. There was traffic, but the carpool lanes served us well.

We started out with a few introductory speeches and a light continental breakfast with the Director of the Research Center. Then, they wanted us (the science fair winners) to give brief overviews of our projects! This was something for us to get “nice and nervous about.” (laughs) Even though I didn’t prepare for this, my short presentation went well enough. I would say there were about 10 winners there, plus guests.

After discussing our projects, a presenter was invited to talk about Saturn and its many moons. On October 15, 1997, the Cassini probe was launched, using a “Venus-Venus-Earth-Jupiter Gravity Assist” trajectory to slingshot its way across the solar system.

Illustration of the trajectory of the Cassini probe launch, using the gravity of other planets to accelerate it towards Saturn.

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