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Kepler-452b (sometimes quoted to be an Earth 2.0 or Earth's Cousin [4] [5] based on its characteristics; also known by its Kepler object of interest designation KOI-7016.01) is a candidate [6] [7] super-Earth exoplanet orbiting within the inner edge of the habitable zone of the sun-like star Kepler-452 and is the only planet in the system discovered by the Kepler space telescope.
The size of TRAPPIST-1 and the close orbit of TRAPPIST-1d around it means that the star as seen from the planet appears 5.5 times as large as the Sun from the Earth. While a planet at TRAPPIST-1d's distance from the Sun would be a scorched world, the low luminosity of TRAPPIST-1 means that the planet gets only 1.043 times the sunlight that ...
It was one of four new exoplanets to be discovered orbiting the star in 2017 using observations from the Spitzer Space Telescope. [6] [7] In the following years, more studies were able to refine its physical parameters. The outermost known planet in its system, it is roughly one third the mass of Earth, and about 76% as large. Its relatively ...
Wasp 17b -- The biggest planet discovered by humans is an exoplanet some 1,000 light-years away that can be found in the constellation of Scorpius. It's more than 173,000 miles in diameter.
TRAPPIST-1e, also designated as 2MASS J23062928-0502285 e, is a rocky, close-to-Earth-sized exoplanet orbiting within the habitable zone around the ultracool dwarf star TRAPPIST-1, located 40.7 light-years (12.5 parsecs; 385 trillion kilometers; 239 trillion miles) away from Earth in the constellation of Aquarius.
It was initially estimated to have a much lower mass, and thus a low density of 3.3 ± 0.9 g/cm 3 and a surface gravity around 6.1 m/s 2 (62% of Earth's value). [1] This suggested a large amount of volatiles , with a 2017 study suggesting that a water ocean may comprise as much as 20% of the planet's mass, increasing the temperature at the ...
Two teams of scientists have discovered a theoretically habitable planet called Gliese 12b that’s smaller than Earth but bigger than Venus, just 40 light-years away.
Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. ... Just 1,477 miles across, it's only one-fifth the diameter of Earth.