Washington - The final solar panel at the space station began unfurling, as planned, on Friday, the final event in the years- long expansion of the energy capacity of the orbiter.
The panel, installed Thursday during a spacewalk by astronauts from the Discovery shuttle, started unfolding at 1506 GMT.
"Everything looking good so far," said a NASA official in Houston in the live webcast on NASA TV. She said the process would take some time, and be halted midway to allow the device to "warm in the sun" - necessary to avoid sticking.