Mind you, the descriptions of the conversation vary widely, which should make readers take these transcripts with a very large chunk of rock salt until we've had confirmation. (dotearth.blogs.nytimes.com)
I basically slipped into a rabbit hole and got this big chunk of rock. (discovermagazine.com)
After the initial explosion in the sky, two larger chunks of rock survived and continued plunging through the atmosphere. (newscientist.com)