Welcome \| Login \| Register	Search Catalog Data Catalog Data & text in Documents Advanced Search
Home Explore Browse All Media Groups Presentations External Media Search Browse Categories Workspace Create Media Groups Presentations Share This Embed This Help

Collection:
NASA Astronomy Picture of the Day Collection Collection NASA Astronomy Picture of the Day Collection Collection
Title:
IC 4406: A Seemingly Square Nebula Title IC 4406: A Seemingly Square Nebula Title
Explanation:
How can a round star make a square nebula? This conundrum came to light with the discovery of planetary nebulae [ http://zebu.uoregon…] like IC 4406. IC 4406 [ http://www.astro.ps…] is most probably cylindrical, with its square appearance the result of our vantage point in viewing the cylinder. Hot gas is known [ http://adsabs.harva…] to be flowing out the ends of the cylinder, while filaments of dark dust [ http://antwrp.gsfc.…] and molecular gas [ http://antwrp.gsfc.…] lace the bounding walls. The star primarily responsible for this interstellar sculpture [ http://oposite.stsc…] can be found in the planetary nebula's center. In a few million years, the only thing left visible in IC 4406 [ http://www.iras.uca…] will be a fading white dwarf star [ http://antwrp.gsfc.…]. Explanation How can a round star make a square nebula? This conundrum came to light with the discovery of planetary nebulae [ http://zebu.uoregon…] like IC 4406. IC 4406 [ http://www.astro.ps…] is most probably cylindrical, with its square appearance the result of our vantage point in viewing the cylinder. Hot gas is known [ http://adsabs.harva…] to be flowing out the ends of the cylinder, while filaments of dark dust [ http://antwrp.gsfc.…] and molecular gas [ http://antwrp.gsfc.…] lace the bounding walls. The star primarily responsible for this interstellar sculpture [ http://oposite.stsc…] can be found in the planetary nebula's center. In a few million years, the only thing left visible in IC 4406 [ http://www.iras.uca…] will be a fading white dwarf star [ http://antwrp.gsfc.…]. Explanation
Credit and Copyright:
H. Bond (STScI), R. Ciardullo (PSU), WFPC2, HST, NASA [ http://www.nasa.gov/] Credit_and_Copyright H. Bond (STScI), R. Ciardullo (PSU), WFPC2, HST, NASA [ http://www.nasa.gov/] Credit and Copyright
keyword:
planetary nebula keyword planetary nebula keyword
keyword:
IC 4406 keyword IC 4406 keyword
facet_where:
Goddard Space Flight Center (GSFC) facet_where Goddard Space Flight Center (GSFC) facet_where
facet_what:
LACE facet_what LACE facet_what
facet_what:
USERS facet_what USERS facet_what
facet_what:
nebula facet_what nebula facet_what
facet_what:
Hubble Space Telescope (HST) facet_what Hubble Space Telescope (HST) facet_what
facet_what:
Infrared Astronomical Satellite (IRAS) facet_what Infrared Astronomical Satellite (IRAS) facet_what
original url:
http://antwrp.gsfc.… original_url http://antwrp.gsfc.… original url
UID:
SPD-APOD-ap000416 UID SPD-APOD-ap000416 UID

IC 4406: A Seemingly Square Nebula

Printer Friendly

Add To Workspace

Export

Media Information

IC 4406: A Seemingly Square Nebula