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Detailed explanation-1: -The nearest-known exoplanet is a small, probably rocky planet orbiting Proxima Centauri – the next star over from Earth. A little more than four light-years away, or 24 trillion miles.

Detailed explanation-2: -The exoplanets are located about 133 light-years from Earth in the Pegasus constellation, and they are 7-10 times more massive than Jupiter. They orbit a star named HR8799, which is about 1.5 times more massive than our sun and approximately five times brighter.

Detailed explanation-3: -These worlds are less than 16 light-years away, very close, relatively speaking! And they’re in the habitable zone of their star, the zone within which liquid water can exist. For comparison, Proxima Centauri b is the closest Earth-mass exoplanet, at 4.2 light-years away.

Detailed explanation-4: -At only four light-years away, Proxima Centauri b is our closest known exoplanet neighbor. Proxima b is a super Earth exoplanet that orbits a M-type star. Its mass is 1.27 Earths, it takes 11.2 days to complete one orbit of its star, and is 0.0485 AU from its star.

Detailed explanation-5: -For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!