MANILA, Philippines--Jack Dorsey will be very pleased that his creation, Twitter, is the first microblogging service to reach outer space.
National Aeronautics and Space Administration (NASA) astronaut Michael Massimino is the first person to send a tweet from outer space.
Massimino is part of the seven-man STS-125 shuttle mission to the Hubble Telescope.

Massimino is a mission specialist and one of the four in the crew to do spacewalks to service the Hubble Telescope. They are riding the shuttle Atlantis.

In his latest tweet, Massimino posted: ?From orbit: Launch was awesome!! I am feeling great, working hard, & enjoying the magnificent views, the adventure of a lifetime has begun!?

His last message sent from earth was posted on May 11, hours before the launch: ?I'm going to put my spacesuit on, next stop: Earth Orbit!!?

Massimino has been sending tweets since April 4th where he has posted updates about his shuttle mission training and preparations.

Since he started using Twitter, Massimino has so far registered 244,421 followers.

The STS-125 is the fourth ?servicing mission? to the Hubble Telescope. The crew will be installing a new spectrograph, wide field camera and gyroscopes, and replace guidance sensors and repair the telescope?s data handling unit.

Other members of the STS-125 mission are Commander Scott Altman, Pilot Gregory Johnson, Spacewalker Michael Good, Flight Engineer Megan McArthur, Mission Specialist John Grunsfield, and Spacewalker Andrew Feustel.