The rock came in a box labeled “khatyrkite.” It didn’t look like much, just a chunk less than a centimeter long with a whitish rind and studded with several dark metals. But when Paul Steinhardt got a good look inside, he saw something he’d been waiting years to see.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.