Kepler-186f
Kepler-186f (also known by its Kepler object of interest designation "KOI-571.05") is an exoplanet orbiting the red dwarf Kepler-186, about 500 light-years (178.5 parsecs, or nearly km) from the Earth.
It is the first planet with a radius similar to Earth's to be discovered in the habitable zone of another star. NASA's Kepler space telescope detected it using the transit method, along with four additional planets orbiting much closer to the star (all modestly larger than Earth).

Analysis of three years of data was required to find its signal. The results were presented initially at a conference on 19 March 2014 and some details were reported in the media at the time. The public announcement was on 17 April 2014, followed by publication in "Science".
Q6393205
Kepler object of interest
CEL
Q44559
exoplanet
Concept
Q5893
red dwarf
Concept
Q16389425
Kepler-186
CEL
Q531
light-year
Concept
Q12129
parsec
Concept
Q828224
km
Concept
Q2
Earth
CEL
Q12772819
discovered
Concept
Q215913
habitable zone
Concept
Q23548
NASA
Concept
Q47272
Kepler space telescope
MISC
Q591022
transit method
Concept
Q192864
Science
MEDIA
Q16389397
Kepler-186f
CEL
2014-03-19T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
19 March 2014
DATE
2014-04-17T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
17 April 2014
DATE
-186^^http://www.w3.org/2001/XMLSchema#decimal
-186
NUMBER
-571.05^^http://www.w3.org/2001/XMLSchema#decimal
-571.05
NUMBER
-186^^http://www.w3.org/2001/XMLSchema#decimal
-186
NUMBER
+178.5^^http://www.w3.org/2001/XMLSchema#decimal
178.5
NUMBER
instance of
parent astronomical body
discoverer or inventor
time of discovery or invention
instance of
item operated