Exploring the Dinkinesh-Selam System

The video explores the discovery of Selam, a moon orbiting the asteroid Dinkinesh, by NASA's Lucy spacecraft. Initially not part of Lucy's mission, the discovery was made during a flyby. Selam's unique snowman shape suggests it is a contact binary, formed from two spheres. The YORP effect, caused by solar radiation, explains Dinkinesh's rapid spin, which may have led to Selam's formation. The video also discusses the implications for understanding solar system formation and offers crafting ideas related to the Dinkinesh-Selam system.

What is the name of the moon orbiting the asteroid Dinkinesh?

• Arrokoth

• Selam

• Trojan

• Churyumov

What was the primary mission of NASA's Lucy spacecraft?

• To explore the asteroid belt

• To visit the Trojan asteroids

• To study Mars

• To observe Jupiter

What unexpected feature did Lucy discover on Dinkinesh?

• A huge ridge

• A volcanic vent

• A frozen lake

• A large crater

What does it mean for Selam to be tidally locked to Dinkinesh?

• It has a variable orbit

• It orbits in the same direction as the Sun

• It faces Dinkinesh with the same side

• It rotates independently

What is a contact binary moon?

• A moon with a smooth surface

• A moon with multiple craters

• A moon with a single spherical shape

• A moon with two separate spheres fused together

What effect causes small bodies like asteroids to spin faster?

• YORP effect

• Tidal forces

• Gravitational pull

• Magnetic field

How fast does Dinkinesh currently spin?

• One rotation every two hours

• One rotation every four hours

• One rotation every six hours

• One rotation every eight hours

What is the YORP effect?

• A tidal interaction

• A magnetic anomaly

• A gravitational phenomenon

• A radiation-induced spin-up

What is the significance of studying Dinkinesh and Selam?

• To understand the early solar system

• To map the asteroid belt

• To find new minerals

• To discover alien life

What is the potential future for Selam according to the video?

• It will disintegrate

• It will form another moon

• It will leave its orbit

• It will collide with Dinkinesh