---
title: "Meaning & Key Takeaway of: The question we ask is - if there is life…"
description: "\"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 exp..."
image: "https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg"
---

#  The question we ask is - if there is life on other…

![“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…” quote by Dimitar Sasselov](https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg)   [Download](https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg) [Open image](https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg)

> “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.”

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

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.

★ ★ ★ ★ ★   No ratings yet

[Experiments](https://sms4smile.com/quotes/about/experiments/) [Life](https://sms4smile.com/quotes/about/life/) [Life on other planets](https://sms4smile.com/quotes/about/life-on-other-planets/) [Planet](https://sms4smile.com/quotes/about/planet/) [Space](https://sms4smile.com/quotes/about/space/)

## Related quotes

> [The discovery and investigation of life on other planets is likely to change many of our ideas about how life arose on the Earth…](https://sms4smile.com/quotes/george-smoot/the-discovery-and-investigation-of-life-on-other-planets-is-likely-to/)

[George Smoot](https://sms4smile.com/quotes/author/george-smoot/)

> [As if we can ever imagine the past, future, life on other planets, everything is such an extension, such a projection of life as…](https://sms4smile.com/quotes/chuck-palahniuk/as-if-we-can-ever-imagine-the-past-future-life-on-other-planets/)

[Chuck Palahniuk](https://sms4smile.com/quotes/author/chuck-palahniuk/)

> [We don't know why we are here and the context of our role in the universe, and the thought of an infinite universe. It's…](https://sms4smile.com/quotes/joel-kinnaman/we-don-t-know-why-we-are-here-and-the-context-of-our-role-in-the/)

[Joel Kinnaman](https://sms4smile.com/quotes/author/joel-kinnaman/)

> [A news: NASA's Rover came in search of life on the planet of Mars, Kyuriociti: Planet of earth life no value here / go…](https://sms4smile.com/quotes/mak-786/a-news-nasa-s-rover-came-in-search-of-life-on-the-planet-of-mars/)

Mak\_786

> [Personally, I don't think there's intelligent life on other planets. Why should other planets be any different from this one?](https://sms4smile.com/quotes/bob-monkhouse/personally-i-don-t-think-there-s-intelligent-life-on-other-planets/)

[Bob Monkhouse](https://sms4smile.com/quotes/author/bob-monkhouse/)

> [Why do we worry about intelligent life on other planets if we doubt it here on earth?](https://sms4smile.com/quotes/frederick-a-babb/why-do-we-worry-about-intelligent-life-on-other-planets-if-we-doubt/)

[Frederick A Babb](https://sms4smile.com/quotes/author/frederick-a-babb/)

> [I believe that there may be intelligent life on other planets.](https://sms4smile.com/quotes/pat-buckley/i-believe-that-there-may-be-intelligent-life-on-other-planets/)

[Pat Buckley](https://sms4smile.com/quotes/author/pat-buckley/)

> [Intelligent life on other planets? I'm not even sure there is on earth!](https://sms4smile.com/quotes/albert-einstein/intelligent-life-on-other-planets-i-m-not-even-sure-there-is-on-earth/)

[Albert Einstein](https://sms4smile.com/quotes/author/albert-einstein/)

> [I keep wondering if, say, there is intelligent life on other planets, the scientists argue that something like two percent of the other planets…](https://sms4smile.com/quotes/donald-barthelme/i-keep-wondering-if-say-there-is-intelligent-life-on-other-planets/)

[Donald Barthelme](https://sms4smile.com/quotes/author/donald-barthelme/)

> [Theoretically, there are planets with an environment that can support life. As yet there is no evidence that there indeed is life on other…](https://sms4smile.com/quotes/rakesh-sharma/theoretically-there-are-planets-with-an-environment-that-can-support/)

[Rakesh Sharma](https://sms4smile.com/quotes/author/rakesh-sharma/)

> [We don't know why we are here and . . . our role in the universe, and the thought of an infinite universe. It's…](https://sms4smile.com/quotes/joel-kinnaman/we-don-t-know-why-we-are-here-and-our-role-in-the-universe-and-the/)

[Joel Kinnaman](https://sms4smile.com/quotes/author/joel-kinnaman/)

> [I haven't a clue if there is life on other planets but I'd be charmed if we found a unicellular organism on Mars. It…](https://sms4smile.com/quotes/tommy-lee-jones/i-haven-t-a-clue-if-there-is-life-on-other-planets-but-i-d-be-charmed/)

[Tommy Lee Jones](https://sms4smile.com/quotes/author/tommy-lee-jones/)

> [“There’s no doubt about it: more varieties of carbon-based molecules exist than all other kinds of molecules combined.”](https://sms4smile.com/quotes/neil-degrasse-tyson/there-s-no-doubt-about-it-more-varieties-of-carbon-based-molecules/)

[Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/)

> [We search for life on others planets and in other regions of our galaxy. Meanwhile we destroy and ignore the other life on this…](https://sms4smile.com/quotes/anthony-d-williams/we-search-for-life-on-others-planets-and-in-other-regions-of-our/)

[Anthony D. Williams](https://sms4smile.com/quotes/author/anthony-d-williams/)

> [“I never understood why so many spiritual people, upon investigating me further, decide to call me angel. I always thought they were being delirious,…](https://sms4smile.com/quotes/robin-sacredfire/i-never-understood-why-so-many-spiritual-people-upon-investigating-me/)

[Robin Sacredfire](https://sms4smile.com/quotes/author/robin-sacredfire/)

## More by Dimitar Sasselov

> [Super-Earths are how we call a family of planets... up to two times larger and about ten times more massive than the Earth.](https://sms4smile.com/quotes/dimitar-sasselov/super-earths-are-how-we-call-a-family-of-planets-up-to-two-times/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [My parents gave me a small telescope, then I built my own, and one thing led to another. So that's how I ended up…](https://sms4smile.com/quotes/dimitar-sasselov/my-parents-gave-me-a-small-telescope-then-i-built-my-own-and-one/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [I grew up in Bulgaria in a small city on the Black Sea Coast, so I was very interested in the sea, marine life,…](https://sms4smile.com/quotes/dimitar-sasselov/i-grew-up-in-bulgaria-in-a-small-city-on-the-black-sea-coast-so-i-was/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [Life and the universe compare to each other like a child and a parent, parent and offspring.](https://sms4smile.com/quotes/dimitar-sasselov/life-and-the-universe-compare-to-each-other-like-a-child-and-a-parent/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [It's feasible that we'll meet other sentient life forms and conduct commerce with them. We don't now have the technology to physically travel outside…](https://sms4smile.com/quotes/dimitar-sasselov/it-s-feasible-that-we-ll-meet-other-sentient-life-forms-and-conduct/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [It feels great to discover a planet, just like any discovery in science, except that it has more of the feel of exploration -…](https://sms4smile.com/quotes/dimitar-sasselov/it-feels-great-to-discover-a-planet-just-like-any-discovery-in/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [People quite often think of the question 'Are we alone in the universe?' in terms of other civilizations out there: life forms that have…](https://sms4smile.com/quotes/dimitar-sasselov/people-quite-often-think-of-the-question-are-we-alone-in-the-universe/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [When we think of what is necessary for the phenomenon that we call life, we think of compartmentalization, keeping the molecules which are important…](https://sms4smile.com/quotes/dimitar-sasselov/when-we-think-of-what-is-necessary-for-the-phenomenon-that-we-call/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [Life is extremely resilient once it takes hold, but it requires rich chemistry, large energy sources, and stability, right from the beginning. The comparative…](https://sms4smile.com/quotes/dimitar-sasselov/life-is-extremely-resilient-once-it-takes-hold-but-it-requires-rich/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [In science, it is rare that a transformational change occurs during our lifetimes.](https://sms4smile.com/quotes/dimitar-sasselov/in-science-it-is-rare-that-a-transformational-change-occurs-during/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [We do care about planets like the Earth because by now we understood that life as a chemical system really needs a smaller planet…](https://sms4smile.com/quotes/dimitar-sasselov/we-do-care-about-planets-like-the-earth-because-by-now-we-understood/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [Ocean planets might be very common in the universe because water is very common in the low-temperature environments where planets form and evolve. This…](https://sms4smile.com/quotes/dimitar-sasselov/ocean-planets-might-be-very-common-in-the-universe-because-water-is/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [We love our planet Earth. We should - it is our home, and there's no place like home. There can't ever be a better…](https://sms4smile.com/quotes/dimitar-sasselov/we-love-our-planet-earth-we-should-it-is-our-home-and-there-s-no/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [Deep and elegant explanations relate to natural or social phenomena and the observer often has no place in them.](https://sms4smile.com/quotes/dimitar-sasselov/deep-and-elegant-explanations-relate-to-natural-or-social-phenomena/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

> [There is immense, powerful potential in life in this universe - especially now that we know that places like the Earth are common. And…](https://sms4smile.com/quotes/dimitar-sasselov/there-is-immense-powerful-potential-in-life-in-this-universe/)

[Dimitar Sasselov](https://sms4smile.com/quotes/author/dimitar-sasselov/)

[Explore all 17 Dimitar Sasselov quotes ](https://sms4smile.com/quotes/author/dimitar-sasselov/)

## More Ask quotes

> [If you ask an introvert a question, wait until she thinks about it. Introverts think before speaking, not through speaking. If you want to…](https://sms4smile.com/quotes/laurie-helgoe/if-you-ask-an-introvert-a-question-wait-until-she-thinks-about-it/)

[Laurie Helgoe](https://sms4smile.com/quotes/author/laurie-helgoe/)

> [I ask to be judged on the issue of unemployment.](https://sms4smile.com/quotes/francois-hollande/i-ask-to-be-judged-on-the-issue-of-unemployment/)

[Francois Hollande](https://sms4smile.com/quotes/author/francois-hollande/)

> [When the only people in mainstream discourse who care about the working class are Wall Street investors, it really is time to ask where…](https://sms4smile.com/quotes/timothy-noah/when-the-only-people-in-mainstream-discourse-who-care-about-the/)

[Timothy Noah](https://sms4smile.com/quotes/author/timothy-noah/)

> [I used to sit in front of McDonald's and ask people for dollars to get me a cheeseburger. It was bad.](https://sms4smile.com/quotes/t-pain/i-used-to-sit-in-front-of-mcdonald-s-and-ask-people-for-dollars-to/)

[T-Pain](https://sms4smile.com/quotes/author/t-pain/)

> [If you ask why I do what I do - I want to make a difference. I don't just want to maintain the status…](https://sms4smile.com/quotes/eli-broad/if-you-ask-why-i-do-what-i-do-i-want-to-make-a-difference-i-don-t/)

[Eli Broad](https://sms4smile.com/quotes/author/eli-broad/)

> [Every morning when I pick up the newspaper and read about an earthquake in Japan or problems in European financial institutions, the first question…](https://sms4smile.com/quotes/mary-schapiro/every-morning-when-i-pick-up-the-newspaper-and-read-about-an/)

[Mary Schapiro](https://sms4smile.com/quotes/author/mary-schapiro/)

> [I follow a simple formula when I compose. I ask myself, 'What would the audience want to hear?' and 'Why would they buy my…](https://sms4smile.com/quotes/a-r-rahman/i-follow-a-simple-formula-when-i-compose-i-ask-myself-what-would-the/)

[A. R. Rahman](https://sms4smile.com/quotes/author/a-r-rahman/)

> [If you ask an actor what he'd prefer to act on, he'd probably say a tangible, real set, or even better, a real location…](https://sms4smile.com/quotes/luke-evans/if-you-ask-an-actor-what-he-d-prefer-to-act-on-he-d-probably-say-a/)

[Luke Evans](https://sms4smile.com/quotes/author/luke-evans/)

> [It turns out that this part of the brain is one of the first areas that's attacked by Alzheimer's disease. So we can now…](https://sms4smile.com/quotes/john-o-keefe/it-turns-out-that-this-part-of-the-brain-is-one-of-the-first-areas/)

[John O'Keefe](https://sms4smile.com/quotes/author/john-o-keefe/)

> [I prefer department stores. In boutiques, they come up and ask you if you need help. I can't get lost in the experience.](https://sms4smile.com/quotes/anna-netrebko/i-prefer-department-stores-in-boutiques-they-come-up-and-ask-you-if/)

[Anna Netrebko](https://sms4smile.com/quotes/author/anna-netrebko/)

> [A lot of people ask: 'Will you play a psycho to really change your image and prove you can act?' But that's not what…](https://sms4smile.com/quotes/zac-efron/a-lot-of-people-ask-will-you-play-a-psycho-to-really-change-your/)

[Zac Efron](https://sms4smile.com/quotes/author/zac-efron/)

> [I'm not in the movie business anymore, and hardly any 70 year olds are. I always ask the producers: 'Are there no 70-year old…](https://sms4smile.com/quotes/brian-dennehy/i-m-not-in-the-movie-business-anymore-and-hardly-any-70-year-olds-are/)

[Brian Dennehy](https://sms4smile.com/quotes/author/brian-dennehy/)

> [I would ask my mum to feed my dolls and make sure they were tucked in when I went to school.](https://sms4smile.com/quotes/gayle-rankin/i-would-ask-my-mum-to-feed-my-dolls-and-make-sure-they-were-tucked-in/)

[Gayle Rankin](https://sms4smile.com/quotes/author/gayle-rankin/)

> [I certainly know that on our first tour of America in 1968, David Crosby came to see us backstage at the Fillmore East in…](https://sms4smile.com/quotes/justin-hayward/i-certainly-know-that-on-our-first-tour-of-america-in-1968-david/)

[Justin Hayward](https://sms4smile.com/quotes/author/justin-hayward/)

> [For the most part, if somebody approaches me and says, 'I'd like to interview you,' who am I to say no, when I spend…](https://sms4smile.com/quotes/mary-roach/for-the-most-part-if-somebody-approaches-me-and-says-i-d-like-to/)

[Mary Roach](https://sms4smile.com/quotes/author/mary-roach/)

Browse all 1,306 Ask quotes

```json
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "Quotation",
            "text": "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.",
            "creator": {
                "@type": "Person",
                "name": "Dimitar Sasselov"
            },
            "isPartOf": {
                "@id": "https://sms4smile.com/quotes/#website"
            },
            "url": "https://sms4smile.com/quotes/dimitar-sasselov/the-question-we-ask-is-if-there-is-life-on-other-planets-should-we/",
            "about": {
                "@type": "Thing",
                "name": "Ask"
            },
            "@id": "https://sms4smile.com/quotes/dimitar-sasselov/the-question-we-ask-is-if-there-is-life-on-other-planets-should-we/#quotation",
            "image": {
                "@type": "ImageObject",
                "@id": "https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg",
                "contentUrl": "https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg",
                "url": "https://sms4smile.com/quotes/i/9f9/dimitar-sasselov-30227_ask_the-question-we-ask-is-if-there-is-life_387124.jpg",
                "width": 1080,
                "height": 1080,
                "caption": "“The question we ask is - if there is life on other planets, should we expect it to be based on the same…” — Dimitar Sasselov",
                "creditText": "SMS4Smile Quotes",
                "creator": {
                    "@id": "https://sms4smile.com/quotes/#organization"
                }
            }
        },
        {
            "@type": "BreadcrumbList",
            "itemListElement": [
                {
                    "@type": "ListItem",
                    "position": 1,
                    "name": "Home",
                    "item": "https://sms4smile.com/"
                },
                {
                    "@type": "ListItem",
                    "position": 2,
                    "name": "Quotes",
                    "item": "https://sms4smile.com/quotes/"
                },
                {
                    "@type": "ListItem",
                    "position": 3,
                    "name": "Dimitar Sasselov",
                    "item": "https://sms4smile.com/quotes/author/dimitar-sasselov/"
                },
                {
                    "@type": "ListItem",
                    "position": 4,
                    "name": "The question we ask is -...",
                    "item": "https://sms4smile.com/quotes/dimitar-sasselov/the-question-we-ask-is-if-there-is-life-on-other-planets-should-we/"
                }
            ],
            "@id": "https://sms4smile.com/quotes/dimitar-sasselov/the-question-we-ask-is-if-there-is-life-on-other-planets-should-we/#breadcrumb"
        },
        {
            "@type": "WebSite",
            "@id": "https://sms4smile.com/quotes/#website",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "publisher": {
                "@id": "https://sms4smile.com/quotes/#organization"
            }
        },
        {
            "@type": "Organization",
            "@id": "https://sms4smile.com/quotes/#organization",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "logo": {
                "@type": "ImageObject",
                "url": "https://sms4smile.com/quotes/wp-content/themes/sq/assets/icons/icon-512.png",
                "width": 512,
                "height": 512
            }
        }
    ]
}
```
