... The Veil Nebula Unveiled . ... These wisps of gas are all that remain visible of a Milky Way star. Many thousands of years ago that star exploded in a supernova leaving the Veil Nebula, pictured above. ... During a recent pass, Cassini was programmed to look back toward the Sun where Enceladus would appear as a thin crescent. Proxima Centauri: The Closest Star . ... Launched ten years ago this week, SOHO (the SOlar and Heliospheric Observatory) still enjoys an uninterrupted view of the Sun. ...