Astro_TJ tweets from the ISS
Seems a belated retraction is in order; @Astro_Mike wasn’t tweeting from orbit, but was having his updates relayed via mission control.
@Astro_TJ is the first to update live from the space station.
From the NASA press release, here’s how:
This personal Web access, called the Crew Support LAN, takes advantage of existing communication links to and from the station and gives astronauts the ability to browse and use the Web. The system will provide astronauts with direct private communications to enhance their quality of life during long-duration missions by helping to ease the isolation associated with life in a closed environment.
During periods when the station is actively communicating with the ground using high-speed Ku-band communications, the crew will have remote access to the Internet via a ground computer. The crew will view the desktop of the ground computer using an onboard laptop and interact remotely with their keyboard touchpad.

