"It turns out that they're really cracked too, and that was the missing piece of the puzzle.
NASA has used advanced imaging techniques to peer inside samples of an asteroid, discovering extensive networks of cracks running throughout the rock particles.
These images show two different views of two small rock particles NASA's OSIRIS-REx probe collected from asteroid Bennu. NASA has been peering inside the samples using X-ray computed tomography (XCT), a special type of imaging that can reveal the interiors of objects without damaging them.
