The Rosetta spacecraft has detected water comes from 67P, the lump-shaped rubber duck ice and dust that the robotic lander Philae is placed in the last month.
The presence of water on a earth is not a surprise, but what researchers done hocks is the composition of water, which is nothing like that seen on Earth.
The Rosina measurements Rosetta instrument found that the water in the 67P / Churyumov-Gerasimenko contains about three times more deuterium – a heavy form of hydrogen – the water on Earth.
More about Rosetta discovers water on comet 67p like nothing on Earth
The discovery seems to invalidate the theory that the Earth got its water, so their ability to support life, the aquifer comets crashed into the planet during its early history.
Comet 67P is believed to have come from what is called the Kuiper Belt, a broad band of icy bodies that begins beyond the orbit of Neptune. The main asteroid belt contains of more rocky objects circling the sun between the orbits of Mars and Jupiter.
Kathrin Altwegg at the University of Bern, said that instead of comets carried water to Earth, may have come on board asteroids instead. Details of the discovery of water are reported in the journal Science.
“Asteroids you have very limited water today, that’s for sure. But that probably was not always the case, Altwegg said. In the earliest time of the solar system, 3.8billion years ago, it is believed that the asteroid that crashed on Earth regularity in what is called the late heavy collisions. “At the time, asteroids would have much more water than they have got today,” said Altwegg.
The instrument Rosina water as it exits the kite flying around the body. Scientists plan to take further actions as the comet approaches the sun and begins to vomit more water vapor and dust in space.
Measurements of other comets found water content similar to that of Earth deuterium. But the strange water composition 67P image suggests that comets bring water to Earth is too simple. “Ultimately, the oceans present on the Earth are probably a mixture of so many things,” said Altwegg magazine New Scientist.
Matt Taylor, Rosetta project scientist, said teams from the European Space Agency still looking for the Philae lander, he ran out of battery power shortly after it bounced down onto the comet’s surface.
If the lander Philae can summon enough power to let the weak get out of hibernation sun, a British instrument called Ptolemy could help verify whether Rosetta water measurements are accurate. Yet another option is that Rosetta flying through the jets of debris that will grow as the comet approaches the sun.
“Part of our future plan is to do this,” Taylor said. “We are focusing on what is known as a campaign activity to try to fly directly through a gate and our goal is to have around summer of next year is expected