No, Rep. Zach Space (D-Ohio) hasn't joined Twitter.

Rather, NASA has taken advantage of the surging popularity of the microblogging service, and sent the first tweeter into orbit.

Mike Massimino is a specialist for the STS-125 mission that launched from Cape Canaveral on Monday, from which he has dispathed two tweets while in orbit.

Massimino documented the run-up to the launch, including gearing up in his space suit, from his BlackBerry and computer.

Since launching, Massimino has tweeted about the "adventure of a lifetime," writing yesterday:
From orbit: Launch was awesome!! I am feeling great, working hard, & enjoying the magnificent views, the adventure of a lifetime has begun!


And tweeting today:
From orbit: Getting more accustomed to living in space today and getting ready for our big rendezvous with hubble


Of course, Massimino hasn't been the only one in government service to tweet their excitement over the shuttle. Former astronaut and Sen. Bill NelsonClarence (Bill) William NelsonSenate panel approves bill to speed up driverless cars Dems plan to make gun control an issue in Nevada Overnight Cybersecurity: Trump proclaims 'Cybersecurity Awareness Month' | Equifax missed chance to patch security flaw | Lawmakers await ex-CEO's testimony | SEC hack exposed personal data MORE (D-Fla.) checked in with glee earlier this week.