[alexander_busek]

I could use some scale to better appreciate this image. How big is, e.g., the largest boulder in the middle of the image?

Is it really correct to refer to regolith as "unusual?" After all, the Martian moons Deimos and Phobos are covered with it, our moon Luna is largely covered with it - wouldn't it be expected even here, on a celestial body the size of Eros?

Regards,

[Rudder]

Does it imply that Eros has gravity sufficient to hold on to its regolith?

[dr_lew]

This Discover Magazine site has a version of this same photo, identifying it as the crater Psyche. ( If you imagine Eros as a ballet slipper, Psyche is on the center of its arched sole. ) Another illustration shows the layout of Eros with a 5km scale. I think the width of the APOD photo is about 3km. That puts the boulder maybe in the 100 meter range.