scientists find signs of water beyond solar system - absorption of water
Astronomers said on Wednesday that they have found the best evidence of water outside the solar system --
In the atmosphere of a giant planet 60 light years from Earth
The planet itself, HD 1897 33b, is unlikely to breed life, researchers wrote in the science journal Nature, but there is evidence to support the search for life in other solar systems.
"We are pleased to find clear signs of water on the planet trillions of miles away," Giovanna Tinetti, a European Space Agency researcher at the Institute of Astrophysics in Paris, France, led the study, was cited in subsequent press releases.
Light-year is the distance in which the beam travels at 186,000 miles per second in a year (
300,000 km per second
Or nearly 6 trillion miles.
There is only one moon on Earth.
Three seconds from our planet.
"While HD 1897 33b is far from habitable and actually provides a fairly harsh environment, our findings suggest that water may be more common than previously thought, our methods can be used to study more life in the future.
A friendly environment . "
The survey shows that the planet runs around a star. the Fox)
The wavelength band corresponding to the water phase appears larger, indicating that the substance exists in the atmosphere.
"We found that the absorption of water vapor is the most likely cause of the wavelength --
"At the infrared wavelength, the dependence on the effective radius of the Earth changes," the researchers said . ".
HD 189733 B is called the planet hot Jupiter
It's like Jupiter, the gas planet of the solar system, but it's much hotter.
The findings contradict earlier studies where there was no evidence of water, Harvard University astronomers Heather knusen said, reviewing the findings in the same issue of Nature.
However, early studies looked at light emitted from the Earth during the day, while the latest study used a different method to measure light passing through the outer edge of the Earth's atmosphere, knusen said.
She says this suggests that some water signals may have been hidden in previous measurements.
"In the long run, we can assess other planets that can support life and have water in the atmosphere," Knutson said in a telephone interview . ".