７１ A planet inhabited by creatures has Discovered！【Space Travel】 Dialogue with the Universe

７１　A planet inhabited by creatures has Discovered！【Space Travel】 Dialogue with the Universe

April 17, 2014 ＮＡＳＡ released
Discovered planet (Kepler 186f) is about 500 light years from Earth at a distance. Its
size is about 1.1 times of Earth's. It rotates around the star similar to the Sun by over 130 days.
This is the first time that Planet of Earth's size is confirmed in habitable zone.
Source: National Geographic News
http://headlines.yahoo.co.jp/hl?a=20140418-00000002-natiogeog-sctch

・By the way, the current speed of the spacecraft, you can go to this planet in about 25 000 years.

December 05, 2011 ＮＡＳＡ released
Discovered planet (Kepler 22b) is about 600 light years from Earth at a distance. Its size is about 2.4 times of Earth's. It rotates around the star similar to the Sun by over 290 days, and the planet's surface temperature is about 22 degrees.
Source: National Geographic News
http://www.nationalgeographic.co.jp/news/news_article.php?file_id=20111206003&expand#title

【Reference】
(1) The Goldilocks planet is the planet which is in the habitable planets and which is similar to Earth in terms of the size and other. Kepler 186f that has been recently discovered is Goldilocks planet.
(2)The use of stone tools first began about 1.8-2.5 million years ago. Homo sapiens (current human) appeared approximately 190,000- 200,000 years ago.

(3) The Distance to the closest terrestrial planet(Gliese 581) is15 light-years.