Science Daily

200 Years Later, Geologist Completes Lewis And Clark Readings

Virtual explorer Robert Criss, Ph.D., professor of earth and planetary sciences at Washington University in St. Louis, has teamed up with Lewis and Clark to provide the oldest determinations of the ...
Nature

Azimuth Tables for the Higher Declinations (limits of declination 24° to 30°, both inclusive) between the parallels of latitude 0° and 60°, with Examples in the use of the ...

A LEADING feature of present-day methods of navigation is the use of tables. There is scarcely any method in use in navigation for which one, and probably many, tables, of more or less practical ...
Nature

(1) Nautical Astronomy (2) The “Newest” Navigation Altitude and Azimuth Tables for Facilitating the Determination of Lines of Position and Geographical Position at Sea

(1) NAUTICAL astronomy is simply the application of spherical trigonometry to the problem of ascertaining the latitude and longitude at sea by observations of the heavenly bodies; as also the errors ...
Midland Daily News on MSN

Two new X-class solar flares raise aurora chances this week

Two new large solar flares over the last 36 hours have increased the chances of northern lights this week, here's the latest projections.