The Nebula IRAS 05437 2502 is seen in this Hubble Space Telescope. The bright upside-down V that defines the upper edge of this floating mountain of interstellar dust is puzzling researchers. This ghost like nebula involves a small star forming region filled with dark dust that was first noted in images taken by the IRAS satellite in infrared light in 1983. This recently released image shows many new details, but has not uncovered a clear cause of the bright sharp arc

Credit : KPA / ZUMA / REX FEATURES