A study detailing the analysis of five of the particles from the asteroid samples was published Wednesday in the journal Science Advances.
Apophis was discovered in 2004 and, after tracking it for 15 years, scientists say the asteroid has a 1 in 100,000 chance of striking Earth decades in the future - after 2060, Newsweek reported.
"We found the samples we examined were enriched in water compared to the average for inner solar system objects", Ziliang Jin, a researcher at Arizona State University and study lead author, said in a news release.More news: Senate Upholds Veto of Yemen Resolution in Victory for Trump Saudi Policy
Researchers looked at the samples' mineral grains and found that they were surprisingly rich in water.
Itokawa, which is considered a siliceous asteroid, is made up of mostly stony materials and nickel. "Of particular interest to me as a small body astronomer, this changes how we think about this type of object and what we assume about how they form and have evolved".
Now, the distance between the moon and planet earth is at 384,400 km.More news: Passengers safe after Boeing 737 skids off runway into river in Jacksonville
It resembles a pair of rubble piles crunched together.
Itokawa is a tiny part of a larger asteroid body which is around 12 miles in width. At one point, it encountered high temperatures that heated it to 1,000 or 1,500 degrees Fahrenheit. In two of the five particles analyzed, the team identified the mineral pyroxene. It discussed mainly about the methods that can be employed by the government to improve their capability to predict, detect, plan and then respond to the impact created by a near-Earth object. After they cut off the water loss due to heating and other actions, it was predicted that the space rock held around 160 to 510 ppm water within. Other scenarios possibly explaining Earth's water sources include the gradual accumulation of ice in pebble-sized bodies as the snow line migrated and the ingassing of molecular hydrogen by growing planets.
The chief of Response Operations Division of FEMA, Leviticus Lewis said that emergency managers want to know about how, when and where would be the impact of the asteroid and also about the extent and type of damage that could be caused. But the discovery of even these amounts of water with the correct isotope signature means that asteroids like it that struck the Earth could have provided more than half of Earth's oceans.
This information can tell us more about the solar system, the formation of our Earth and also about space and the things that are out there.More news: Lakers to offer Tyronn Lue head coach job in coming days
"More importantly, several Itokawa-like bodies may have collided with the proto-Earth and provided water to the planet", he said.