Hubble found water vapor on an exoplanet beyond our solar system

Water vapor have been detected in the atmosphere of an exoplanet named K2-18b. This planet is 110 light years away from Earth and it orbits a dwarf red star once every 33 days which is about half the size of the Sun. With, eight times the mass, and double in size of the Earth, K2-18 is the most habitable planet ever found till now.

Using Hubble data, scientists analyzed the starlight that filtered through K2-18b’s atmosphere and found the molecular signature of water vapor in the planet’s atmosphere. K2-18b orbits a dwarf red star which is much smaller, cooler and more active than the Sun which could affect its atmosphere and environment.

K2-18b may be the most habitable planet ever found but it is very unlikely that K2-18 host life. To seek the answers NASA will use its next generation space telescope named James Webb Space Telescope in the coming years. which will characterize exoplanet atmospheres in more detail. These future telescope will help us to determine how much water vapor is there, if there are clouds and what kind of surface is there.

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