SATELLITES & SPACE PROBES 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           HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site Yohkoh A Japanese-led mission, launched by ISAS (Institute of Space and Astronautical Science) with collaboration from the United States and Britain, which in 2001 celebrated a decade of solar X-ray imaging. It is the first spacecraft to continuously observe the Sun in X-rays over an entire sunspot cycle and carries the longest-operating CCD (charge-coupled device) camera in space: the instrument that has captured over six million images. According to the latest projections, Yohkoh will stay in orbit until the next solar maximum, around 2010. Over the next few years, it will closely collaborate with RHESSI (Reuven-Ramatty High Energy Solar Spectroscopic Imager), a NASA mission that is providing crucial calibration data for its high-resolution hard X-ray images. Yohkoh, which means “sunlight,” was known before launch as Solar-A. Related entry    • Hinode (Solar-B) Related categories    • X-RAY SATELLITES    • JAPANESE SATELLITES AND SPACE PROBES    • SATELLITES AND SPACE PROBES    • JAPAN IN SPACE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP