Interview with Ann Druyan and Steven Soter
Summary (Jun 24, 2002): Ann Druyan, the widow of renowned scientist Carl Sagan, and astrophysicist Steven Soter collaborated with Sagan over many years to create the famed television series Cosmos and numerous other projects.
Druyan and Soter's latest collaborative project,
The Search for Life: Are We Alone? screens at the Hayden Planetarium at the Rose Center for Earth and Space in New York. Narrated by Harrison Ford, the space show simulates a walk on Mars, a flyby of Jupiter's moon Europa, and other excursions with breathtaking realism.
According to the New York Times, "the visuals of the Martian landscape surround the audience and create the feeling that, with a step or two, one could be out strolling among the rocks and dust of another world. The illusion is stunning." The Associated Press says, "It's quite a ride." In this interview with Astrobiology at NASA executive producer Kathleen Connell, Druyan and Soter discuss a range of subjects, such as how they depicted the possibilities of life beyond Earth, what the discovery of extraterrestrial life could mean for humanity, and what it was like to work alongside Carl Sagan.
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Interview with Ann Druyan and Steven Soter
Novel Life Forms, Novel Environments
Kathleen Connell: Tell me about your creative process, separately and as collaborators, to show something that we cannot visibly represent yet. How did you think through that for the show at the
American Museum of Natural History at the Rose Center's Hayden Planetarium? What were your entry points into that process in terms of writing the script and thereby really developing the content for the show-which I understand is very successful.
Ann Druyan: We knew we weren't going to show any extraterrestrials, because of course we didn't have the scientific license to do that. Even to speculate would probably be disappointing. This posed a bit of a problem, because we were essentially writing a show about a subject (alien life) in which our ignorance is so much more formidable than anything we know about it. So it was a challenge. We wanted to give a sense of the
diversity of life on this planet to suggest the challenge of imagining an extraterrestrial, simply because if you've never seen an elephant or a lobster it would be impossible to imagine it. That was another thing that was in our minds. So what we were trying to do was to create a kind of platform for the imagination that would tell as much as we could tell, in the brief time allotted to us, about what we do know about the
processes that make worlds throughout the galaxy and the universe. We wanted to allow the audience to have this very immersive experience that's possible in the Hayden Planetarium dome with its
amazing apparatus-which has a kind of awesome natural reality to it. We hoped that they would take away from it, if nothing else, a sense of the humility implicit in even contemplating these things.
I really loved the
first show. I like this show even better than the first in many ways, because I think it succeeds in making those invisible worlds in the universe real and compelling. The process itself was hours and weeks and months of sitting together and throwing these ideas around, and talking, and finally arriving at the script for the present show.
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The sulfuric brew issuing from these hydrothermal vents sustains a bizarre undersea ecosystem.
Credit: University of Victoria |
Steven Soter: One of the ideas that we wanted to convey, one of the major discoveries of recent times, was the
expansion of the realm of the environments for life that we know. For a long time it was assumed-when I was in high school it was in all the biology textbooks-that all life needs sunlight, either directly or indirectly. And the discovery of life on the deep seafloor around the
hydrothermal vents in 1977 overturned that.
Whole ecosystems, very rich ones, were discovered that are in some ways independent of sunlight, and
derive a lot of their energy from the heat and chemical energy of the Earth coming up in volcanic fluids on the seafloor. So it was a discovery of whole thriving communities of many species that were unknown to science previously. That has profound implications for life elsewhere in the universe. You don't need sunlight. You don't need stars. You could have life below the surfaces of planets in
interior oceans or in cracks of
aquifers below the surfaces of worlds, even perhaps on
planets without stars. It vastly increases the potential number of places in the universe where you could have life.
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A ghostly crab picks its way through a field of tube worms-their tips reddened with their blood vessels-near a hydrothermal vent.
Credit: punaridge.org |
Since we couldn't show alien life we thought we could come as close to it as we know on Earth, and visit this very alien-looking environment on the Earth. One of the first scenes in the space show is a visit to a
black smoker, a sulfide hydrothermal vent field on the Pacific Ocean floor, one that was actually mapped in great detail by this museum and the University of Washington. We used the actual data acquired by stereophotography and sonar to reconstruct that very bizarre environment of belching volcanic vents and chimneys surrounded by
tube worms and strange
crabs-completely surrounded by this alien environment. The script says that this place is alien, like another world, but it's right here on Earth at the bottom of the sea. We only recently discovered it.
The implication is, how much else don't we know? We have to be careful in our assumptions. Just as we once assumed that life requires sunlight, we now know that's not so. What are our other assumptions? Well, we assume that
all life in the universe needs liquid water, because all life on Earth seems to. We have to also
look skeptically at that assumption. It may also be wrong.
So we did reconstruct this very alien environment on Earth, and even had a manta ray come swimming over it, because that fish actually was in a video that was done at the real black smoker field by the research team. And that's as alien-looking an Earth creature as I can imagine, and it gives a real feeling of being on another world, and we're right here on Earth! That was one way we dealt with the problem of suggesting alien life forms, without being able to show them.
Monday, June 24, 2002
