Astronomy Abbreviations and Acronyms

1. XT
   Xtra-Terresrrial
2. XTLA
   Extended Three Letter Acronym
3. XUV
   Extreme Ultraviolet
4. XUV
   Extreme Ultra-Violet
5. YCAS
   York County Astronomical Society
6. YCO
   York College Omservatory
7. YERAC
   Young European Radio Astronomers Conference
8. YS
   Yellow Straggler
9. YSC
   Yokohama Science Center
10. YSG
    Yellow Super Giant Star
11. YSG
    Yellow Super Giant
12. YSO
    Young Stellar Obbect
13. YSO
    Young Stellar Object
14. ZAC
    Zenith Azimuth Coordinates
15. ZACUBE
    Za Cubesat
16. ZAHB
    "Zero-Age" Horizontal Branch
17. ZAHB
    Zero-Age Horizontal Branch
18. ZAMS
    Zero Age Main Sequence
19. ZAMS
    Zero Age Main Sequence, a star that has just become a main-sequence star (i.e. a star that has begun burning hydrogen in its core)
20. ZAND
    Z Andromedae

Last updated: August 3, 2021 — Total entries: 5,937