Astronomy Picture of the Day ·
Halloween and the Ghost Head Nebula
The Astronomy Picture of the Day for October 31, 2007 is “Halloween and the Ghost Head Nebula,” an image. It is credited to Credit: Mohammad Heydari-Malayeri ( Observatoire de Paris ) et al., ESA , NASA. The original explanation runs about 150 words.
From the explanation
“Halloween’s origin is ancient and astronomical. Since the fifth century BC, Halloween has been celebrated as a cross-quarter day , a day halfway between an equinox (equal day / equal night) and a solstice (minimum day / maximum night in the northern hemisphere).”
— APOD editors, October 31, 2007
Read the full explanation on science.nasa.gov
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At a glance
- Date
- October 31, 2007
- Type
- Image
- Credit
- Credit: Mohammad Heydari-Malayeri ( Observatoire de Paris ) et al., ESA , NASA
- Copyright
- No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
- Explanation length
- About 150 words