Astronomy Picture of the Day . ... 7.01.1997 . ... Credit Copyright: LASCO , SOHO , ESA , NASA Explanation: The Sun is leaking. In fact, it is gushing: particles stream away from the Sun at hundreds of kilometers per second. ... Most particles, however, either surround the Sun as a huge solar corona or glide into interstellar space as the solar wind . ... This instruments blocks out the central solar disk so it can image the regions surrounding the Sun . ... Publications with keywords: Sun . ...