Helen Gavaghan

NASA at the end of its tether over reel problems

Technology

Technology: Electric power from satellite on a string

Technology

Technology: Satellite peers through window to the Galaxy

NASA cuts back to win over Congress

NASA celebrates its spacewalking endeavours

Animal experiments the American way: Scientists in the US have more leeway than colleagues abroad when it comes to deciding what animal experiments can be performed

Wobbly start for space salvage crew

Science: Galactic neighbour may harbour a black hole

Green research gains ground in America

Nervous NASA awaits its new supremo

Technology

Technology: Plans for massive NASA database 'too vague'

Washington takes a stand on biotechnology