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" It feels great to discover a planet, just like any discovery in science, except that it has more of the feel of exploration - you can go back and look at it. However, I can never visit. "
Dimitar Sasselov
Look
Discovery
Great
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" 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 might be especially true for super-Earths, which can retain volatiles more easily thanks to their larger mass and surface gravity. "
Dimitar Sasselov
True
Thanks
Ocean
" There is immense, powerful potential in life in this universe - especially now that we know that places like the Earth are common. And that potential, that powerful potential, is also our potential, of you and me. "
Dimitar Sasselov
Life
Know
You
" Life and the universe compare to each other like a child and a parent, parent and offspring. "
Dimitar Sasselov
Like
Parent
Universe
" We do care about planets like the Earth because by now we understood that life as a chemical system really needs a smaller planet with water and with rocks and with a lot of complex chemistry to originate, to emerge, to survive. "
Dimitar Sasselov
Life
Rocks
Survive
" 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
Try
Find
Depend
" In science, it is rare that a transformational change occurs during our lifetimes. "
Dimitar Sasselov
Change
Science
Rare
" Life is extremely resilient once it takes hold, but it requires rich chemistry, large energy sources, and stability, right from the beginning. The comparative planetology of our solar system makes it seem like those initial conditions are hard to come by. "
Dimitar Sasselov
Energy
Rich
Life
" When we think of what is necessary for the phenomenon that we call life, we think of compartmentalization, keeping the molecules which are important for life in a membrane, isolated from the rest of the environment, but yet, in an environment in which they actually could originate together. "
Dimitar Sasselov
Think
Together
Life
" 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 place than Earth. "
Dimitar Sasselov
Home
Like
Love
" When we discover New Earth - a planet we could call home - the question of the 'plurality of worlds' will come front and center, reminding us yet again that we are not the center of the universe. "
Dimitar Sasselov
New
Us
Question
" I grew up in Bulgaria in a small city on the Black Sea Coast, so I was very interested in the sea, marine life, and everything related to it. But it was also a very dark place at night, so I could see the stars. And I just got very interested in it. "
Dimitar Sasselov
Small
Night
Life
" 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 our solar system for such an exchange to take place, but we are like Columbus centuries ago, learning fast how to get somewhere few think possible. "
Dimitar Sasselov
Meet
Life
Technology
" 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 going from being a hobby astronomer to a professional astronomer. "
Dimitar Sasselov
Small
Me
My Own
" Super-Earths are how we call a family of planets... up to two times larger and about ten times more massive than the Earth. "
Dimitar Sasselov
Up
Earth
Two