... with Rock Bush from Stanford University, California, made the measurements of the Sunт??s size with the Michelson Doppler Imager (MDI) aboard NASAт??s Solar and Heliospheric Observatory (SOHO). т??Transits of Mercury occur 12-13 times per century, so ...
... By combining data from space (VIRGO and MDI, on SOHO) and ground (GONG and BiSON) instruments, we hope to improve this detection and open up a new branch of solar science," says Garcia. ...
... Paul Mortfield, the SOHO/MDI Education and Outreach director at the Stanford University Solar Center, described scientifically valuable observations that amateurs can do, such as monitoring solar activity. ...