April 17, 2014
NASA's Kepler space telescope confirms the discovery of the first Earth-size planet in the habitable zone of another star.
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Source: Wikipedia (CC BY-SA)
On April 17, in the year 2014:
NASA's Kepler space telescope confirms the discovery of the first Earth-size planet in the habitable zone of another star.
In astronomy and astrobiology, the habitable zone (HZ), the circumstellar habitable zone (CHZ), the Goldilocks zone, is the range of orbits around a star within which a planetary surface could potentially support liquid water.
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Why April 17, 2014 matters:
NASA's Kepler space telescope confirms the discovery of the first Earth-size planet in the habitable zone of another star.
What began on this day left a lasting mark on history. The effects were felt immediately and continued to shape events, ideas, and lives long afterwards.
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Historical context: April 17, 2014
The 21st century has already seen profound shifts: the digital revolution has connected billions while reshaping politics and culture; climate change has emerged as a defining crisis; and new powers have risen to challenge the world order that followed the Cold War.
The event on this day: NASA's Kepler space telescope confirms the discovery of the first Earth-size planet in the habitable zone of another star.
Source: https://en.wikipedia.org/wiki/Habitable_zone (Wikipedia, CC BY-SA)
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