Extraterrestrial Crew Area in Color

 You can see from this image that the extraterrestrials have excellent space management in their ships.

Asteroid YR4 From a Different Image Source

 This closeup of Asteroid YR4 was completed from using a different image source. Notice the hourglass shape of the asteroid, similar to a bowling pin.

Asteroid YR4

 Here is a nice closeup of YR4.