Title: Living with our Changing Sun - NASA Living with Star Initiative, by G. Withbroe
Title: Radiative Inputs of the Sun to Earth, NSF RISE Program Summary, by M. P. Rast
Title: Study of Terrestrial Effects of Solar Variability: NASA Earth Science Enterprise programs, by D. Anderson
Title: Solar Physics Programmes from ESA and ISAS
Author: Richard A. Harrison
Affil: Rutherford Appleton Laboratory
Email: r.harrison@rl.ac.uk
Abstract: The current 'golden age' of space-based solar physics includes missions from NASA, ESA and ISAS, namely TRACE, SOHO and Yohkoh, and in the next decade, we anticipate a continuation of solar programmes not only from NASA, but also from ESA and ISAS. The next major solar mission from ISAS is Solar-B, due for launch in 2005. It will carry a 50cm aperture optical telescope (diffraction limited at 0.25 arcsec), feeding a vector magnetograph and a spectrograph, an X-ray telescope operating in the 2-60 Angstrom range with 1-2.5 arcsec resolution, and a 1 arcsec EUV imaging spectrometer. These instruments are being produced by consortia based in Japan, the UK and USA. ESA has just approved a mission called Solar Orbiter as one of its next 'F' missions. Due for launch no earlier than 2009, this mission will orbit the Sun and use electric propulsion and planetary flybys to approach the Sun to within 45 solar radii, to perform pseudo-corotation observations of the Sun and to climb out of the ecliptic to view the Sun for the first time with remote sensing instruments from out of the ecliptic plane. The strawman payload includes an array of light-weight remote sensing instruments and a particle and field package. The status of these two missions and their relationship to the NASA programme will be discussed, as well as future prospects for SOHO and Yohkoh.