Search the Dictionary:

 
A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
 

International Space Station (ISS)
ISS photographed from the Space Shuttle Discovery. Courtesy NASA.

International Space Station (ISS):

An internationally developed and maintained space research station that is in orbit around Earth. The station is expected to remain in use until 2020. It can be seen from Earth as a bright light moving across the sky.