Newly-discovered asteroid 2008 EZ7 flew past Earth last night at a distance of only ~100,000 miles. Normally, an asteroid as small as 2008 EZ7 would attract minimal attention. Even if it hit Earth, the result would be little more than a bright fireball and a sprinkling of meteorites across some uninhabited stretch of our planet. 2008 EZ7 may prove to be more interesting, however; rumor has it that a second space rock provisionally named "BJ19377" is following 2008 EZ7 in a similar orbit and will soon make its own close approach. Could this be a twin asteroid flyby?