
PK 164 +31.1: The Headphone Nebula
2026-05-27
What is a pair of headphones doing in the sky? Today’s image features the Headphone Nebula, also known as PK 164 +31.1 or Jones-Emberson 1. This planetary nebula, the remnant of a dying Sun-like star, faintly occupies an angular region of the Lynx constellation about 1/5th the diameter of the full moon. The red and blue-ish green colors trace hydrogen and oxygen atoms, respectively, that have been excited and ionized by the nebula's central white dwarf. The headphone shape, where two lobes of hydrogen puncture the inner region of oxygen, adds this object to a long list of oddly shaped nebulae. The morphology of such strange nebulae hint at the presence of a stellar or planetary companion, which can stir the material flowing out from the dying star. You can listen to Hubble and JWST sonifications of planetary nebulae through your very own headphones!
via NASA APOD
(12211) Arnoschmidt ist ein Asteroid, der am 28. Mai 1981 von dem deutschen Astronomen Hans-Emil Schuster an der Europäischen Südsternwarte entdeckt wurde. Der Asteroid wurde am 28. September 2004 nach dem Schriftsteller Arno Schmidt (1914–1979) benannt, in dessen Werken eine Vielzahl von Wortspielen und Verweisen auf astronomische Themen enthalten sind. Die Vergabe des Namens erfolgte auf Anregung des Astronomen Hilmar W. Duerbeck (1948–2012).
Abstract from DBpedia / Wikipedia · CC BY-SA
via Wikidata · CC0
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).