More than 100 days into a planned six-month stay aboard the International Space Station, Expedition Four flight engineers Dan Bursch and Carl Walz have provided a rare glimpse of life in orbit.

In an open letter sent from the space station this weekend, Bursch shares his thoughts and experiences over 122 days in space. The letter may be found at:

http://spaceflight.nasa.gov

Bursch, along with Walz and commander Yury Onufrienko, has been living and working on the station since early December. In the ensuing months, crewmembers celebrated Christmas in space and performed two spacewalks, and currently are preparing for the arrival of the next Shuttle crew later this week.

Bursch's "letter home" provides an intimate look at life on board the station, including day-to-day operations, the challenges of being away from family and the excitement of life in space. Walz compares his experience as a Shuttle-based spacewalker to that of the February spacewalk he and Bursch conducted from the space station.

The Expedition Four crew will return to Earth in June aboard Endeavour after spending more than six months in orbit. They will be replaced by another three-person crew, extending more than 17 months of continued human occupancy on board the station.

Around-the-clock coverage of the ongoing space station mission and the current STS-110 mission is available on NASA Television. NASA TV is accessible through GE2, transponder 9C, with a frequency of 3880 MHz, an orbital position of 85 degrees West Longitude and audio at 6.8 MHz.

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