What has NASA's OSIRIS-REx discovered around the asteroid Bennu?

The video discusses the OSIRIS-REx mission to asteroid Bennu, the smallest object ever orbited. The mission aims to map Bennu's surface and return a sample to Earth. Initial findings include hydrated materials, suggesting water presence. Challenges include selecting safe landing sites due to large boulders. Bennu's dynamic activity, such as ejection events, was unexpected. The mission continues to explore Bennu's surface and prepare for sample collection.

What makes Bennu a unique object for the Osiris Rex mission?

• It is located in the outer solar system.

• It is the largest asteroid ever orbited.

• It is the smallest object ever orbited.

• It has a strong gravitational pull.

Why is it important to retrieve samples directly from Bennu?

• To collect samples from a larger asteroid.

• To obtain samples unaffected by Earth's atmosphere.

• To analyze samples that have been exposed to Earth's surface.

• To study the effects of Earth's atmosphere on meteorites.

What unexpected finding did Osiris Rex discover on Bennu's surface?

• A thick layer of ice.

• A surface covered with large boulders.

• A large number of small craters.

• A smooth, flat terrain.

What is the significance of finding clays on Bennu?

• It shows that Bennu has a magnetic field.

• It indicates the presence of volcanic activity.

• It suggests the presence of liquid water in Bennu's past.

• It confirms Bennu's origin from a comet.

What challenge did scientists face when selecting a landing site on Bennu?

• The abundance of large boulders.

• The high temperature of the surface.

• The lack of any flat surfaces.

• The presence of a thick atmosphere.

What dynamic activity was observed on Bennu by Osiris Rex?

• Magnetic field fluctuations.

• Atmospheric storms.

• Material ejection events.

• Volcanic eruptions.

What effect is causing Bennu's rotation to gradually speed up?

• The presence of a magnetic field.

• Tidal forces from nearby planets.

• The Yarkovsky effect.

• Gravitational interactions with other asteroids.