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Water detected in atmosphere of potentially habitable exoplanet

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Water detected in atmosphere of potentially habitable exoplanet

Water detected in atmosphere of potentially habitable exoplanet

Scientists have found water for the first time on a potentially habitable exoplanet.

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Water detected in atmosphere of potentially habitable exoplanet

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RESTRICTIONS: Broadcast: NO USE JAPAN, NO USE TAIWAN Digital: NO USE JAPAN, NO USE TAIWAN Scientists have found water for the first time on a potentially habitable exoplanet.

According to the Washington Post, exoplanet K2-18b is twice as big as Earth, with eight times its mass.

It orbits a red dwarf star 110 light years or 650 million miles away from Earth, completing an orbit every 33 days.

K2-18b sits in its star's habitable zone.

The BBC reports that this gives it a temperature of between zero and 40 degrees Celsius, cool enough to have liquid water.

Using data collected by the hubble space telescope, scientists studied looked for subtle changes in starlight as it filtered through K2-18b's atmosphere.

According to CNN, they detected the molecular signature for water vapor in the planet's atmosphere, along with the signatures for hydrogen and helium.

The BBC reports that computer modeling of the data suggests as much as 50 percent of the planet's atmosphere could be composed of water.

According to CNN, researchers say other elements like nitrogen or hydrogen could be present in the planet's atmosphere, but can only be revealed by more advanced future telescopes such as the James Webb Space Telescope or ESA's Ariel mission.

RUNDOWN SHOWS: 1.

Size of K2-18b exoplanet compared to Earth, orbit around red dwarf star 2.

K2-18b in its star's habitable zone 3.

Changes to starlight indicate presence of water in atmosphere 4.

As much as 50% of atmosphere could be water VOICEOVER (in English): "According to the Washington Post, exoplanet K2-18b is twice as big as Earth, with eight times its mass.

It orbits a red dwarf star 110 light years or 650 million miles away from Earth, completing an orbit every 33 days." "K2-18b sits in its star's habitable zone.

The BBC reports that this gives it a temperature of between zero and 40 degrees Celsius, cool enough to have liquid water." "Using data collected by the hubble space telescope, scientists studied looked for subtle changes in starlight as it filtered through K2-18b's atmosphere." "According to CNN, they detected the molecular signature for water vapor in the planet's atmosphere, along with the signatures for hydrogen and helium." "The BBC reports that computer modelling of the data suggests as much as 50 percent of the planet's atmosphere could be composed of water." SOURCES: BBC, Washington Post, CNN, The Guardian https://www.bbc.com/news/science-environment-49648746 https://www.washingtonpost.com/science/2019/09/11/found-first-potentially-habitable-super-earth-with-water-its-skies/ https://edition.cnn.com/2019/09/11/world/water-atmosphere-exoplanet-scn/index.html https://www.theguardian.com/science/2019/sep/11/rocky-super-earth-k2-18b-named-most-habitable-known-world-beyond-solar-system *** For story suggestions please contact [email protected] For technical and editorial support, please contact: Asia: +61 2 93 73 1841 Europe: +44 20 7542 7599 Americas and Latam: +1 800 738 8377



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