NASA has launched yet another infrared telescope:
BBC News - Nasa readies jumbo eye in the skyThe US space agency Nasa has unveiled a powerful new tool in its quest to unravel the mysteries of the Universe. The Stratospheric Observatory for Infrared Astronomy is a modified Boeing 747-SP aircraft known as Sofia.
Developed in partnership with the German Aerospace Centre, DLR, the 'plane is the only flying astronomical observatory in the world.
It carries a 2.7m telescope, and offers astronomers a unique opportunity to explore the cosmos.
It can identify objects that emit radiation at infrared wavelengths, which are not visible to the human eye.