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- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Newsgroups: sci.space
- Subject: Re: future space travel
- Message-ID: <C0n61s.7o8.1@cs.cmu.edu>
- Date: 10 Jan 93 14:09:55 GMT
- Article-I.D.: cs.C0n61s.7o8.1
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: National Institute of Standards and Technology formerly National Bureau of Standards
- Lines: 36
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- X-Added: Forwarded by Space Digest
- Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU
-
-
- -From: henry@zoo.toronto.edu (Henry Spencer)
- -Subject: Re: future space travel
- -Date: 10 Jan 93 02:32:25 GMT
-
- -In article <rabjab.7.726624045@golem.ucsd.edu> rabjab@golem.ucsd.edu (rabjab) writes:
- ->Seems like the future will see expanding development of robotic systems
- ->that will be used to explore every planet and moon, at a vastly
- ->reduced cost over sending humans.
-
- -It is yet to be established that this can be done effectively, except
- -perhaps on the Moon where speed-of-light lags are short. Just flying
- -around and taking pictures is the easy part. Interacting with a complex
- -planetary surface, without minute-by-minute human attention, is vastly
- -more problematic. None of the currently-proposed Mars robots, for
- -example, is going to have anywhere near the fossil-hunting efficiency
- -of even an amateur paleontologist. Unless robotics improves greatly,
- -in-depth investigation of planetary surfaces will still require humans.
-
- On a related note, the Discovery Channel recently replayed an episode of
- "Living Planet", which among other things featured the dry valleys of
- Antarctica. Conditions there are very reminiscent of Mars - bitter cold
- much of the time, bare rock, high winds, and dryer than the Sahara Desert.
- (There's even fairly intense UV, by Earth standards.)
- Yet life is there - algae living under rocks, sheltered from the most
- extreme cold, and getting light needed for photosynthesis from sunlight
- shining *through* the rocks. Other algae are found *inside* rocks, located
- between the component crystals of the rock.
-
- I agree that currently-envisioned probes would have difficulty finding
- life under those conditions. That's not to say that unmanned probes
- aren't extremely valuable (and useful as a precursor to manned exploration)
- in the near term.
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-