Sagittarius A*
Credit: EHT Collaboration
Source: https://www.eso.org/public/images/eso2208-eht-mwa/
License: Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
2017 radio observations, released 12 May 2022. Orange is assigned to 1.3-mm radio intensity. The bright ring is not the event horizon. File downloaded unchanged.
Field width 140 microarcseconds from image AVM metadata. Ring diameter 51.8 ± 2.3 microarcseconds from EHT Collaboration (2022), doi:10.3847/2041-8213/ac6674.

Voyager 1
Heliocentric geometric distances: NASA/JPL Horizons, spacecraft -31, centre 500@10, TDB. Data retrieved 26 October 2026.
https://ssd.jpl.nasa.gov/horizons/
1980 trajectory is patched-conic mission design; 1981 onward is the 2022 refit and prediction based on tracking through 1992. Values are ephemeris predictions, not live telemetry.