SOHO SOHO satellite Solar and Heliospheric Observatory Solar and Heliospheric Observatory satellite SOHO, the Solar and Heliospheric Observatory SOHO satellite SOHO satellite SOHO satellite Solar and Heliospheric Observatory SOHO: Spying on the Sun SOHO satellite SOHO, the Solar and Heliospheric Observatory SOHO satellite SOHO satellite Solar and Heliospheric Observatory SOHO: Spying on the Sun