Earth

Earth: Where did the water on Earth come from, what was the role of the Sun in it

cosmos Education science

Many types of research have been done on where the water on Earth came from. The funny thing in this is that sometimes it was told that water on Earth came from asteroids and meteorites from space, and sometimes it was also said that water formed on Earth itself and remained here from the beginning. Most of this researches have been done on the fragments of meteorites and asteroids that fell on the Earth. The new study analyzed an ancient asteroid sample obtained from Japan’s 2010 Hayabusa mission. This study has shown that the water on Earth came from the dust particles of space from which the planets were formed.

Role of solar wind
The study, conducted by researchers from the UK, Australia and the US, found that water was formed in dust particles when charged particles called the solar wind coming from the Sun changed the chemical composition of the dust particles in space, causing them to Water molecules can be produced.

So much water in the oceans
Scientists call this process space weathering. In this study published in the journal Nature Astronomy, scientists have said that it is challenging to create a water structure in Earth’s oceans by mixing materials from sources such as asteroids. But solar winds can answer this question.

These reasons have been given so far
Planetary scientists have long wanted to know how so much water came into Earth’s oceans. Some theories have suggested that this may have been caused by the rain of water-bearing asteroids that hit Earth 4.6 billion years ago. Researchers believe that some of the water on Earth came from a ‘C’ type asteroid.

This investigation will be beneficial
Researchers also believed that the water on Earth must have come from another mild isotopic source that was elsewhere in the solar system. The new investigation will also reveal many mysteries surrounding the arrival of water on Earth and the number of large amounts that surround the surface. Scientists are also hoping that the results of this study will be helpful in future space missions to find water on airless planets.

Study of space rock samples
The international team, led by scientists from the University of Glasgow, studied samples from different space rocks using atom probe tomography. These rocks are called S type asteroids, which orbit the Sun by staying closer to them than C type asteroids.

Water molecules in samples
These samples were from the Itokawa asteroid and were analyzed. When scientists studied the molecular structure of one atom at a time, it was found that they have the presence of water molecules. The lead author of this study, Dr Luke Daley, explained how water molecules reached or formed in them.

Dr Daley said that the hydrogen ions coming from the Sun collided with the dust present in the space with an asteroid without air and went inside the matter and affected their chemical composition. Due to this, hydrogen ions slowly reacted with oxygen molecules to form water molecules inside the rock and dust, which were hidden in the minerals of the asteroids. This dust must have come to Earth with solar winds and asteroids and brought water.