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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 Bipolar Jets of KX Andromedae
Explanation: Blasting outward from variable star KX Andromedae, these stunning bipolar jets are 19 light-years long. Recently discovered , they are revealed in unprecedented detail in this deep telescopic image centered on KX And and composed from over 692 hours of combined image data . In fact, KX And is spectroscopically found to be an interacting binary star system consisting of a bright, hot B-type star with a swollen cool giant star as its co-orbiting, close companion. The stellar material from the cool giant star is likely being transferred to the hot B-type star through an accretion disk , with spectacular symmetric jets driven outward perpendicular to the disk itself. The known distance to KX And of 2,500 light-years, angular size of the jets, and estimated inclination of the accretion disk lead to the size estimate for each jet of an astonishing 19 light-years .
Free APOD Lecture in Phoenix: Wednesday, December 10 at 7 pm
| Date | December 5, 2025 |
|---|---|
| Credit | Image Credit & Copyright: Tim Schaeffer and the Deep Sky Collective |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |