shield restricts or reduces heat caused by sunlight hitting a spacecraft. An example of use of a thermal shield is on the Infrared Space Observatory. The ISO sunshield helped protect the cryostat from sunlight, and it was also covered with solar panels. Not to be confused with the concept of a global-scale Sun shield in geoengineering, often called a Space sunshade or "Sun shield", in which the spacecraft itself is used to block sunlight to a planet. An example of a sunshield in spacecraft design is the sunshield on the James Webb Space Telescope. See also Environmental control and life-support system Space sunshade Temperature control Bibliography Gilmore, D. G., “Satellite Thermal Control Handbook”, The Aerospace Corporation Press, 1994. Karam, R. D., Satellite Thermal Control for Systems Engineers, Progress in Astronautics and Aeronautics, AIAA, 1998. Gilmore, D. G., “Spacecraft Thermal Control Handbook 2nd ed.”, The Aerospace Corporation Press, 2002. De Parolis, M. N., and W. Pinter-Krainer. Current and Future Techniques for Spacecraft Thermal Control 1. Design Drivers and Current Technologies. 1 Aug 1996. Web: 5 Sep 2014. References Temperature control Spacecraft design