SOHO views Mercury's transit of the Sun - 9 May 2016 09 May 2016 Skywatchers throughout most of the world can today catch a glimpse of Mercury as it passes between Earth and the Sun in a rare astronomical event known as a planetary transit. Mercury will appear as a tiny black dot as it glides in front of the Sun's blazing disc over a period of seven and a half hours. The ESA/NASA SOHO spacecraft will see the transit about 2 hours before Earth-bound observers. Read more
SOHO (SOlar Heliospheric Observatory) is a space-based observatory, viewing and investigating the Sun from its deep core, through its outer atmosphere - the corona - and the domain of the solar wind, out to a distance ten times beyond the Earth's orbit.
Two-year extensions confirmed for ESA's science missions 22 November 2016 ESA's Science Programme Committee (SPC) has today confirmed two-year mission extensions for nine scientific missions in which the Agency is participating. This secures their operations until the end of 2018. Read more
SOHO's 3000th comet - contest 04 March 2015 It may have been designed to probe and monitor the Sun, but the ESA/NASA Solar and Heliospheric Observatory (SOHO) has also found fame as a comet finder. A record-breaking 2890 comets have been discovered with SOHO since its launch in 1995, more than any other comet hunter in history! Read more