Sciences & Nature

‘Earth-like’ water has been spotted inside the ‘Christmas comet’ – Daily Mail

‘Earth-like’ water has been spotted inside the ‘Christmas comet’ – Daily Mail

‘A vast reservoir of Earth-like water’ was found inside the ‘Christmas comet’ as it flew past Earth last year and may explain the origins of our planet’s oceans, NASA saysThe measurements were taken by SOFIA the ‘flying’ observatory at high altitude It found some comets had the same ratio of ‘regular’ and ‘heavy’ water as Earth Suggesting that comets delivered the first waters to Earth billions of years agoSome of this water then formed the seas and oceans that exists today By Yuan Ren For Mailonline Published: 13:14 EDT, 24 May 2019 | Updated: 13:14 EDT, 24 May 2019 The Christmas comet which flew past Earth in December last year contained ‘a vast reservoir of Earth-like water’ similar to that which is in our oceans today.  NASA scientists claim this backs up the theory that distant space rocks delivered the first water to Earth which went on to form oceans and seas.Water on earth exists in two forms, as regular water and a ‘heavier’ version called HDO. Hydrogen with an extra particle, a neutron, is known an isotope and called deuterium and the ratio of normal water to deuterium varies. The ratio on the Christmas Comet is the same as on Earth, indicating they share the same origin. Scroll down for video   Comets colliding with the earth in the early days of our solar system may have delivered the first water to our planet that formed its seas and oceans NASA’s flying Stratospheric Observatory for Infrared Astronomy, known as SOFIA, is the world’s largest telescope and took measurements of the comet. It collected data from comet 46P/Wirtanen which made a close approach to the Earth’s surface in December, and was dubbed the Christmas comet. ‘We have identified a vast reservoir of Earth-like water in the outer reaches of the solar system,’ said Darek Lis, lead author of the study, in a statement.  WHAT IS DEUTERIUM?  Deuterium is an isotope of water, meaning it has the same amount of protons but an extra neutron compared to regular water. It exists naturally but often the ratio of water to deuterium can reveal information.   Deuterium has a natural abundance in Earth’s oceans of about one atom in 6,420 of hydrogen.The observations have made scientists think that comets could have first delivered water to earth because the ratio of two types of water molecules on th
Read More

Source link : Daily Mail

Author :

Publish date : 2019-05-24T17:14:35Z

Copyright for syndicated content belongs to the linked Source

Related posts

著名理论物理学家葛墨林院士荣休—新闻 – 科学时报

This NASA Spacecraft Will Crash into an Asteroid to Test Earth’s Defenses Against Space Rocks –

Evolution – Fisch passt sich extremer Verschmutzung an – Süddeutsche Zeitung

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More