Viking spacecraft biological experiments | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-05

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Viking_lander_biological_experiments


00:00:29 1 The experiments
00:00:50 1.1 Gas chromatograph — mass spectrometer
00:04:25 1.2 Gas exchange
00:05:16 1.3 Labeled release
00:09:02 1.4 Pyrolytic release
00:10:32 2 Scientific conclusions
00:13:14 3 Controversy
00:15:42 4 Critiques
00:17:39 5 Future missions
00:18:44 5.1 Proposed missions



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SUMMARY
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The two Viking landers each carried four types of biological experiments to the surface of Mars in 1976. These were the first Mars landers to carry out experiments to look for biosignatures of microbial life on Mars. The landers used a robotic arm to put soil samples into sealed test containers on the craft. The two landers were identical, so the same tests were carried out at two places on Mars' surface, Viking 1 near the equator and Viking 2 further north.