Discovering the planet has never been long before

Astronomers have discovered outer planets The solar system has the longest year, up to 704 days.

Astronomers have discovered outer planets The solar system has the longest year, up to 704 days.

Kepler-421b planet , takes nearly 2 years of Earth to surround a ring around its host star. Astronomers say that most of the more than 1,800 extrasolar planets discovered so far have a host close distance and a much shorter trajectory than the planet Kepler-421b.

Picture 1 of Discovering the planet has never been long before

Artwork of planet Kepler-421b orbiting the star Kepler-421.

"Detecting the Kepler-421b planet is extremely lucky ," said Dr. David Kipping, head of the research team at the Harvard-Smithsonian Center for Astrophysics (USA). 'The farther a planet is from its host, the less it moves through the star when viewed from Earth'.

Kepler-421b is about 177 million kilometers from the orange star Kepler-421, while the Kepler-421 star is colder and dimmer than the Sun. This makes the planet the same size as Uranus with temperatures below -93 degrees C.

Astronomers discovered the planet Kepler-421b after analyzing data sent from the Kepler spacecraft of the US Aviation Agency (NASA). Kepler observed Kepler-421 for 4 years, but only discovered Kepler-421b 2 times.

Kepler-421 star is located about 1,000 light-years from our Earth. It belongs to the constellation Lyra.

Update 17 December 2018
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