PLANETARY SCIENCE:
Risks in Space from Orbiting Debris
J.-C. Liou1 and N. L. Johnson2
Space junk represents a growing threat to commercialization and other activities in space.
1J.-C. Liou is in the Engineering Science Contract Group (ESCG)/ERC at NASA Johnson Space Center, Mail Code JE104, 2224 Bay Area Boulevard, Box 7, Houston, TX 77058, USA. 2N. L. Johnson is in the Orbital Debris Program Office, NASA Johnson Space Center, Houston, TX 77058, USA.
*Author for correspondence. E-mail: jer-chyi.liou1{at}jsc.nasa.gov