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For it is the duty of an astronomer to compose the history of the celestial motions or hypotheses about them. Since he cannot in any certain way attain to the true causes, he will adopt whatever suppositions enable the motions to be computed correctly from the principles of geometry for the future as well as for the past.

— Andreas Osiander, As translated in Nicolaus Copernicus and Jerzy Dobrzycki (ed.), Nicholas Copernicus on the Revolutions (1978)
  • Radio Telescopes of the USA

June VHF/UHF Contest Approaching

The June VHF Contest occurs at the start of the summer sporadic E season, and intense openings on 6 meters and even 2 meters are possible. It’s a whole new world of propagation possibilities that also include tropospheric ducting, aurora, and even meteor scatter and moonbounce. With many HF transceivers on the market equipped for […]

Ephemeris for 76W Longitude

6:49 am
7:26 pm
2
%
New Moon
1 days, 7 hours
9:27 pm
8:01 am

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