Ask Quote by Dimitar Sasselov
“The question we ask is - if there is life on other planets, should we expect it to be based on the same molecules, i.e. be universal - or should we expect it to depend on the local conditions, i.e. on the planet's geochemistry. So to find out, we try experiments on biomolecules, starting with such geochemistry conditions.”
About This Quote
Source Lecture: Astrobiology Seminar, 2018
He questions whether extraterrestrial life must share Earth‑like chemistry or could arise from different planetary conditions.
In simple terms: Life elsewhere might use different chemistry, not just Earth’s.
Key Takeaway
Consider diverse planetary environments in the search for life.
Themes
astrophysics
chemistry
philosophy
exploration
open‑mindedness
Mood
curious
thoughtful
speculative
Type
scientific
inquisitive
When to use this quote
- space mission design
- lab simulation
- public outreach
- policy planning
Key Concepts
planetary science
organic chemistry
exoplanet studies
Questions to Reflect On
- What alternative biochemistries could exist?
- How can we design experiments for unknown chemistries?
A Different Perspective
Assuming Earth‑like chemistry may limit detection methods.
![“We don't know why we are here and . . . our role in the universe, and the thought of an infinite universe. It's something the human mind can't really grasp. [And] it's statistically impossible that there's not life on other planets.” quote by Joel Kinnaman](https://sms4smile.com/quotes/img-quotes/8f0/joel-kinnaman-4273_human-mind_we-don-t-know-why-we-are-here-and-our-ro_147178.jpg)
