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Questions and Answers
How many planets discovered by NASA's Kepler telescope could potentially be Earth-like and fit for life?
How many planets discovered by NASA's Kepler telescope could potentially be Earth-like and fit for life?
- Approximately 75
- Approximately 25
- Approximately 50 (correct)
- Approximately 10
Who discovered Uranus in 1781?
Who discovered Uranus in 1781?
- NASA's Kepler telescope
- Neptune
- Pluto
- William Herschel (correct)
In what year was a planet discovered orbiting a star 50 light years away?
In what year was a planet discovered orbiting a star 50 light years away?
- 1781
- 2015
- 2005
- 1995 (correct)
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Study Notes
- NASA's Kepler telescope has discovered over 1,200 planets orbiting distant stars
- Approximately 50 of these planets could be Earth-like and fit for life
- The search for radio transmissions from these planets has begun
- Discovering a signal would indicate the presence of inhabitants with technological knowledge
- Before 1781, only seven celestial bodies were known to humans
- William Herschel discovered Uranus in 1781, suggesting more planets may exist
- Neptune and Pluto were discovered in the following century and a half
- In 1995, a planet was discovered orbiting a star 50 light years away
- This planet was at least half the size of Jupiter and had extremely high surface temperatures
- The discovery of these planets has expanded our knowledge of the universe.
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