ESA Image of the Day : 22 years of SOHO
The activity cycle of the Sun – where the number of sunspots increase and decrease – has been monitored regularly for around 250 years, but the use of space-based telescopes has given us a whole new perspective of our nearest star.
Credit : SOHO (ESA & NASA)
Hi, I found some acronyms/abbreviations in this post. This is how they expand: