Astronaut Mike Massimino became the first person in history of social media to voice off from space. Mike is twittering about the STS-125 mission. On May 12th, 2008 at 10:33PM – Mike posted the first tweet from Earth’s orbit. This is the first time that Twitter "left the mother Earth". Mike’s tweet consisted out of following message:

"From orbit: Launch was awesome!! I am feeling great, working hard, & enjoying the magnificent views, the adventure of a lifetime has begun!"

We received last message 20 hours ago, as Mike was readying for his spacewalk: "From orbit: Rendezvous and grapple were great, getting ready for our first spacewalk".

You can go to Twitter and check out Mike’s tweets – when he finds time for them – at twitter.com/Astro_Mike. At the time of writing, Mike had 280,664 followers.