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I think Pluto has to be considered among the places in the solar system that are possible homes for life.
- David Grinspoon
#Life
#Possible
#Solar System
#Solar
We have to learn to become a new kind of entity on this world that has the maturity and the awareness to handle being a global species with the power to change our planet and use that power in a way that is conducive to the kind of global society we want to have.
- David Grinspoon
#Change
#Maturity
#Power
#Society
#World
Among the radio astronomers of SETI - the Search for Extraterrestrial Intelligence - it's only sort-of a joke that the true hallmark of intelligent life is the creation of radio astronomy.
- David Grinspoon
#Intelligence
#Life
#Radio
#Search
#True
Literally, my earliest memory, my earliest vivid memory, is the Apollo 11 landing on the Moon. Yeah, I was in fourth grade, and I was just so captivated. And I think you'll find a lot of space scientists of my generation will say the same thing. Apollo was a big event for them.
- David Grinspoon
#Find
#Generation
#Memory
#Moon
#Space
In environments that are energy-rich but liquid-poor, like near the surface of Titan, natural selection may favor organisms that use their metabolic heat to melt their own watering holes.
- David Grinspoon
#Favor
#Heat
#May
#Natural Selection
#Own
The hallmark of the human species is great adaptability.
- David Grinspoon
#Great
#Hallmark
#Human
#Species
There is a history of thinking about space science from an environmental ethics perspective. And part of what I want to do is turn that back and use that experience to see if it reflects how we think about the Earth.
- David Grinspoon
#Experience
#History
#Science
#Space
Ever since the environmental movement was sparked by photos of the whole Earth taken by astronauts onboard Apollo Lunar Modules, I've seen planetary exploration as an extension of a reverence and care for Earth.
- David Grinspoon
#Care
#Earth
#Environmental
#Exploration
I do comparative studies of climate evolution, and the interactions between planetary atmosphere and surfaces and their radiation environment, and try to understand the environmental factors that can affect a planet's habitability and how they change over time.
- David Grinspoon
#Change
#Environmental
#Evolution
#Time
Time and time again, our species has escaped existential threats by reinventing ourselves, finding new skills not coded in our genes to survive new challenges not previously encountered.
- David Grinspoon
#Challenges
#Genes
#New
#Survive
#Time
It's OK to pursue speculative ideas because we don't want to be too cozy and safe and assume that we know everything about life in the universe. However, we have to be rigorous and careful and honest and logical and scientifically meticulous when we speculate.
- David Grinspoon
#Cozy
#Ideas
#Life
#Safe
#Universe
The planet Mars - crimson and bright, filling our telescopes with vague intimations of almost-familiar landforms - has long formed a celestial tabula rasa on which we have inscribed our planetological theories, utopian fantasies, and fears of alien invasion or ecological ruin.
- David Grinspoon
#Alien
#Bright
#Long
#Mars
#Planet
What if life is not carbon-based? Can life exist as a gas or a plasma? Could planets or stars in some sense be alive? What about an interstellar cloud? Could life exist on such a small or large scale, or move so fast or so slowly that we wouldn't recognize it? Could you have an intelligent virus?
- David Grinspoon
#Alive
#Fast
#Intelligent
#Life
#Stars
There's eco-pragmatism, where you recognize, 'Yeah, we live on a planet that's permanently altered by humanity, and rather than seek to return to or preserve pure wilderness, we recognize that's an illusion, and we proceed under the new knowledge that we live, in fact, in a human-dominated planet.'
- David Grinspoon
#Humanity
#Illusion
#Knowledge
#Live
#New
We need visions of a future in which we have applied our infinite creativity to the task of living on a finite world, where we have embraced our role, become comfortable and proficient as planet-shapers, and learned to use our technological skills to enhance the survival prospects not just of humanity but of all life on Earth.
- David Grinspoon
#Future
#Humanity
#Life
#Survival
#World
As a young planet, Venus was losing hydrogen rapidly to space. The oceans boiled off, and after some period of time, perhaps 600 million years, there was no surface water.
- David Grinspoon
#Losing
#Space
#Time
#Water
#Young
If you were on the surface of Venus, assuming you could see the Sun, which, you know, would be hard because it's so cloudy there, but the Sun would actually rise in the west and set in the east. And, it would do so very, very slowly, because the planet rotates incredibly slowly.
- David Grinspoon
#Hard
#Know
#Rise
#See
#Sun
As Earth's climate changes, we can expect more destructive hurricanes. As sea level and surface temperatures rise, more solar energy is trapped in the atmosphere, revving up the hydrological cycle of evaporation and precipitation and sometimes manifesting in terrifying storms.
- David Grinspoon
#Earth
#Energy
#Rise
#Sea
#Solar
Once we become a multiplanet species, our chances to live long and prosper will take a huge leap skyward.
- David Grinspoon
#Leap
#Live
#Long
#Take
#Will
Venus and Mars are our next of kin: they are the two most Earth-like planets that we know about. They're the only two other very Earth-like planets in our solar system, meaning they orbit close to the sun; they have rocky surfaces and thin atmospheres.
- David Grinspoon
#Know
#Meaning
#Solar System
#Solar
#Sun
Humans are possessed, to some degree, with the power of foresight. Yet we so often learn things the hard way, through disaster.
- David Grinspoon
#Degree
#Disaster
#Hard
#Power
#Way
It's quite possible there's as much lightning on Venus as on Earth.
- David Grinspoon
#Earth
#Lightning
#Possible
#Quite
#Venus
Astrobiology is the science of life in the universe. It's an attempt to scientifically deal with the question of whether or not we're alone in the universe, looking at the past of life, the present of life, and the future of life. It's an interdisciplinary study incorporating astronomy, biology, and the Earth sciences.
- David Grinspoon
#Alone
#Future
#Life
#Science
#Universe
Our most valuable resources - creativity, communication, invention, and reinvention - are, in fact, unlimited.
- David Grinspoon
#Communication
#Creativity
#Invention
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