Novel detectors that operate at 60 millikelvin are now being used to study cosmic gas at millions of kelvin.

Caroline Kilbourne Stahle, Dan McCammon, and Kent D. Irwin

Physics Today, August 1999, pp 32-37.

CAROLINE STAHLE is a physicist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. DAN MCCAMMON is a physics professor at the University of Wisconsin-Madison. KENT IRWIN is a physicist at the National Institute of Standards and Technology facility in Boulder, Colorado.

COPYRIGHT 1999 American Institute of Physics, S-0031-9228-9908-020-5.

Reproduced on the web with permission from American Institute of Physics.

Appendix: History of quantum calorimetry