Free Republic

Kepler normally makes news for its planetary findings, like this batch of nine planets discovered in a habitable zone of stars where conditions could be right for liquid water, and potentially life. Twitter has a long history of hacks, often targeted at celebrity accounts. A hacker compromised Jack Black's Tenacious D Twitter account earlier this year with a fake death notice sent out to his fans. Other big names, including Katy Perry and Facebook's Mark Zuckerberg, have also been victimized on the social-media site. NASA's Kepler account seems like an unusual choice for a Twitter hack. "We're investigating the cause...