Year of the Comet
Comet C/2011 L4 (PANSTARRS)

PANSTARRS information

Comet C/2012 S1 (ISON)

ISON information

Web Extras

Journey to the Pencil Nebula

Hubble images take you to the heart of the Vela Supernova Remnant.
By Daniel Pendick
Published: February 21, 2008
Hubble imaging team members combined multiple images to create this imaginary journey to the Pencil Nebula. The zoom continues all the way to a small region of the Pencil Nebula's wispy filamentary structures. The nebula's shape suggests it is part of the supernova shock wave that recently encountered a region of dense gas.
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