NASA's latest asteroid target has a wet and wet history


Long before he knocked out her, a small, long-lived, Bennu, a wet, watery beginning, according to a new evidence published by NASA.

At this time NASIR's OSIRIS-REx spacecraft, which came to Bennu on 3 December after a two-year tour, is located approximately 12 miles above the asteroid surface. It has recently returned data that shows that the surface of the asteroid is surrounded by miners like clay that Some parts of the rock showed beer water at any time.

"Bennu seems to be a very good waterfall, and water is the most interesting and probably the fastest thing you'll see from an asteroid," said Dante Lauretta, a leading researcher about OSIRIS-REx mission at today's news conference.

It is estimated that water is valuable for future space confidence because it is fuel; there. By empowering m & # 39; water asteroids that would mean future missions would not be dependent on Earth for fuel, and which could be able to further investigate the Solar System .

It is important to be aware that although it is possible to determine the richness of water, which does not mean the beverage of water on the surface of the surface nowSub-Estimation There is a measurement of over 1,600 feet in diameter, currently Binding so little that the surface can not support rapturous water. Researchers have a & # 39; think that between 800 million and a billion years ago, Bennu is part of a larger asteroid, more than 62 miles in diameter, which would be large enough to maintain water. Planetary scientists believe that the larger body has been destroyed in a large disaster, leaving smaller pieces such as Determining a & # 39; move through space in collections that resemble large sections of rubbish.

People who are working on the project have long suspected that the type of potato potatoes may have to be determined. "Determining proves that it was just the asteroid we hoped it would be," said Jeff Scientist, a science scientist program for the OSIRIS-REx mission at today's news conference.

The spacecraft got its first spot on its target this August, when Bennu still slipped a distance, 1.4 million miles away. In the last few months, the surface of the asteroid has been focused, and researchers have a better idea of ​​what has been done. Throughout the procedure, the legacy instruments built the readings that showed that there was full water clay on the Bennu surface.

"This is a great news and this is a great surprise," said Amy Simon, an amateur scientist on the OSIRIS-REx mission, at his press conference.

In addition to the presence of single-widespread material, researchers also published that they have collected enough data to create a new, more modern 3D model of the asteroid surface.

NASA / Goddard / University of Arizonaa

The symbol could look good, but Bennu has a hidden depth. Based on the data collected so far, researchers can estimate that 40% of Setting could just be easier.

OSIRIS-REx will enter the orbit around Bennu on December 31 and will start to & # 39; map its surface in detail. The spacecraft will stay near Bennu for the next few years, and up until 2020 when it connects to the surface of the asteroid, and hopes that it will take a sample before taking it away in 2021. He expects to return – with everything he gathers back to Earth in 2023.

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