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The Bennu asteroid keeps it fast rotating and the scientists are not sure why



Bennu asteroids keep pace faster and scientists are not sure why: The days are getting shorter in the distance of the rock explored by a NASA probe

  • Space rock spins faster than a second every century but scientists are still trying to find out why
  • NASA discovers the asteroid, which is a diameter of 1,614-feet (492 m), and rotates once each 4.3 hours
  • The probe looks at data collected by two ground-based telescopes between 1999 and 2005 and by Hubble
4:59 EDT, March 15, 2019 |

A distant rock space called Bennu spins faster means that the cycle time gets shorter by about a second every 100 years – but Scientists are still trying to figure out why.

NASA looks at the asteroid to help them understand the evolution of other similarities, their potential danger on Earth, and if they can pay for resources.

Scientists used data gathered during the OSIRIS-REx mission, before the arrival of the probe, to calculate that the speed of Bennu's rotation was fast over time.

Bennu is 70 million miles (110m km) away from Earth. While walking in space at about 63,000 miles per hour (101,000 km per hour), it is also spins, complete with full rotation every 4.3 hours.

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  A distant stone space called Bennu rotates faster which means that the rotation period gets shorter by about 1 seconds every 100 years - but scientists still try to figure out why. NASA discovers the B-type asteroid (pictured), which is a diameter of 1,614-feet (492 m), and rotates once every 4.3 hours

A distant gap called Bennu rotates The faster its meaning during the rotation gets shorter by about 1 second per 100 years – but scientists are still trying to figure out why. NASA is exploring the B-type asteroid (pictured), which is a diameter of 1,614-feet (492 m), and rotates once every 4.3 hours

WHAT IS THE USE OF USE?

The OSIRIS-REx mission is scheduled to bring a Bennu sample to Earth in 2023.

Even with Bennu, observations leave the mystery of what it causes.

A possible explanation is that the material moving around the surface of Bennu or removing the asteroid can fully allow the speed of the rotation to accelerate.

The idea that the rotation of asteroids could accelerate over time was first predicted around 2000 and was first noticed in 2007.

Today, this acceleration is seen only in a small number of asteroids.

that the change in Bennu's rotation may have been due to a change in its shape, similar to how ice skaters accelerate as they get their weapons, an asteroid can be accelerated whilst material is lost.

The rise in rotation may not seem much but experts say that over a long period of time it can be translated into dramatic changes in stone space.

The survey looks at the data collected by two ground-based telescopes between 1999 and 2005 and the Hubble Space Telescope in 2012.

That is when they view Hubble's data that they notice the speed of Asteroid rotation in 2012 does not match their predictions based on previous data. & # 39; You can not do all three of them suited correctly, & # 39; says Mike Nolan, lead author of the new research and a geophysicist at the Lunar and Planetary Laboratory at the University of Arizona, who is head of OSIRIS ROM science mission team.

& # 39; That's when we came to this idea that needs to be accelerated. & # 39;

According to study authors, while asteroids serve faster and faster over millions of years, it may lose pieces of itself or crack itself.

& # 39; While it speeds up, things should change, looking at those things and this speed detection gives us some clues about the types of things we should look for , & # 39; Dr. Nolan added in a written statement.

& # 39; We should look for evidence that something is different from the recent past and things that can be thought of may change as we continue. & # 39;

& # 39; You can not do all three of them suited correctly, & # 39; Nolan said. That's when we came up with this idea should be accelerating. & # 39;

  Scientists used data gathered during the OSIRIS-REx mission, before the probe arrived, to calculate that the speed of Bennu's rotation was fast over time. This photo is a mosaic composite composed of 12 PolyCam images collected on December 2, 2018

Scientists used data gathered during the OSIRIS-REx mission, before the probe arrived, to calculate Bennu's rotation speed over time. This photo is a mosaic composite composed of 12 PolyCam images collected on December 2, 2018

The OSIRIS-REx mission is set to carry a Bennu sample on Earth in 2023.

Even with Bennu , observations leave the mystery of what it causes.

A possible explanation is that the material moving around the surface of Bennu or removing the asteroid can fully allow the speed of the rotation to accelerate.

The idea that the rotation of asteroids could accelerate over time was first predicted around 2000 and was first noticed in 2007.

Today, this acceleration is seen only in a small number of asteroids.

  Bennu is 70 million miles (110m km) away from Earth. While walking in space at about 63,000 miles per hour (101,000 km per hour), it is also spins, complete with full rotation every 4.3 hours. This picture shows an artist's impression on Osiris-Rex's spurecraft on the asteroid

Bennu is 70 million miles (110m km) away from Earth. While walking in space at about 63,000 miles per hour (101,000 km per hour), it is also spins, complete with full rotation every 4.3 hours. This image shows an artist's reflection of the Osiris-Rex spacecraft artist on the asteroid

Authors say that the change in Bennu's rotation may be due to a change in its shape, & # 39; of how ice skaters speed up while they pull their weapon ', an asteroid can accelerate as the material disappears.

Dr Nolan also suggested the reason why Bennu's rotation was more likely due to a phenomenon known to the effect of YORP.

This means that the sunrise of the asteroid is visible in space. The change in direction of light coming from and going out pushes the asteroid and can cause it to rotate faster or slower, depending on its shape and rotation.

The reason for the increase in Bennu's rotation is more likely due to an unusual thing known by the Yarkovsky-O & # 39; Keefe-Radzievskii-Paddack effect, & # 39; said Dr. Nolan.

The OSIRIS-REx mission will determine the level of Bennu's rotation freely this year, which will help scientists defend the cause of the rise of the rotation.

HOW WE ARE THE SAMPLES OF ASTEROID WORK? [19659050] Osiris-Rex is the first United States mission designed to return a piece of an asteroid to Earth.

Scientists say that ancient asteroids can hold clues to the origins of life.

It is believed to have been formed 4.5 billion years ago, remaining in the building blocks of the solar system.

The spacecraft was launched on September 8, 2016 at 19:05 EST by rocket Atlas V. After a careful review of Bennu to identify the asteroid and find the sites of the best sample , the Osiris-Rex will collect between 2 and 70 ounces (about 60 to 2,000 grams) of its surface material with its robotic arm and return the sample to Earth through a flexible capsule in 2023.

To get the samples over, the craft will hover over a particular area and & # 39; be sent to a slow and gentle & # 39; 4 inches (10 cm) per second. The spacecraft also provides a laser altimeter, a suite of cameras supplied by the University of Arizona, spectroscopy and lidar, similar to radar, using light instead of radio waves to measure the distance.

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