Planetary Nebula PK 164 31 . ... The bubble of expanding gas pictured above is the planetary nebula PK 164 +31.1, the remnants of the atmosphere of a Sun-like star expelled as its supply of fusion-able core hydrogen became depleted. ... PK 164 +31, also known as Jones-Emberson 1 , lies about 1,600 light years away toward the constellation of the Wildcat ( Lynx ). ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ... A service of: LHEA at NASA / GSFC . ...