Test

CCI02.07.01.- Why can't we see evidence of alien life?

PEDRO ÁLVAREZ JIMÉNEZ 5 preguntas Actualizado el 7 mar 2018

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Preguntas del test (5)

1What has NASA's Kepler Mission discovered?
1. AOther carbon-based life forms in our galaxy
2. BUnusual radio signals from other galaxies
3. CPlanets around nearby stars within our galaxy
2According to Anderson, if we extrapolate the Kepler data, how many life-supporting planets could there be in our galaxy?
1. ATwo dozen
2. BFifty million
3. CHundreds
3In 1950, Enrico Fermi asked
1. AHow can we be certain that extraterrestrials haven’t already colonized Earth at some point in its history?
2. BWhat do we mean by “intelligent life”?
3. CWhere is everybody?
4Anderson says that possible answers to Fermi’s question include
1. AAliens have existed, but they destroyed themselves before we came on the scene
2. BWe’re not looking hard enough
3. CThey’re communicating in ways we can’t currently detect
5SETI recently made its data public in order to:
1. AIncrease tourism revenue in various UFO hotspots
2. BEngage citizen scientists to help with its work
3. CDemonstrate its credibility to detractors