APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
The Elephant's Trunk Nebula in Cepheus
Explanation: Like an illustration in a galactic Just So Story , the Elephant's Trunk Nebula winds through the emission nebula and young star cluster complex IC 1396 , in the high and far off constellation of Cepheus . Also known as vdB 142, the cosmic elephant's trunk is over 20 light-years long. This colorful close-up view was recorded through narrow band filters that transmit the light from ionized hydrogen, sulfur, and oxygen atoms in the region. The resulting composite highlights the bright swept-back ridges that outline pockets of cool interstellar dust and gas. Such embedded, dark, tendril-shaped clouds contain the raw material for star formation and hide protostars within . Nearly 3,000 light-years distant , the relatively faint IC 1396 complex covers a large region on the sky, spanning over 5 degrees. The dramatic scene spans a 1 degree wide field, about the size of 2 Full Moons.
| Date | August 16, 2019 |
|---|---|
| Credit | Image Credit & Copyright: Chuck Ayoub |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |



