Histology Look-a-like #130
A hair follicle v Andromeda galaxy (M31)
Viewed with a microscope: Hair follicles in cross section reveal a multi-layered organization composed of connective tissue, keratinocytes derived from the epidermis and a keratin hair shaft in the center.
Viewed with a telescope: Andromeda (the nearest major galaxy to our own Milky Way Galaxy) appears as a region of diffuse light from the hundreds of billions of stars that compose it.
The similarity between the two always makes me smile and wonder if there are as many “hair follicle” galaxies out there are as there are in our own skin.
Remarkably, that is not where the similarity between the histology of hair and astronomy ends. Examining the same hair follicles, but this time cut in longitudinal section, also reveals a cosmological connection. See look-a-like #46 here.
Sources:
Histology by Haneen Al.Maghrabi
Andromeda by Robert Gendler via NASA
via Tumblr http://ift.tt/1n3plV2
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