NASA Mission Update: ULYSSES
Source- http://www.nasa.gov/multimedia/podcasting/mission_update_index.html Date- 'The sun is the source of life-sustaining energy here on Earth. Much of how it works - and affects us -- remains a source of scientific mystery. Sunspots were first recorded by humans in the 16-hundreds. Astrophysicists have since linked heightened sunspot activity with the solar wind. It's a million-mile-an-hour force of magnetically-charged particles emanating from the sun's upper atmosphere. Ebbing and flowing in minimum and maximum intensities over eleven year cycles, this so-called space weather can seriously affect how things work here on Earth, such as disrupting satellite communications, telephone service and personal electronics.'