the center of our Milky Way Galaxy is hidden from the prying eyes of optical telescopes by clouds of obscuring dust and gas. But in this stunning vista, the Spitzer Space Telescope’s infrared cameras penetrate much of the dust revealing the Galaxy

“As the first of the next-generation of extremely large optical/infrared telescopes, the TMT will pave the technology road for future even larger mega-telescopes.”

did ya see it?

from the Defense Mapping Agency

Ultra-bright green laser beam — 50x brighter than red lasers. Possible surveying applications re: quick traverse placement

“The use of Polaris for azimuth observation has not been popular in land surveying applications due to myths about the difficulty and inconvenience of its use…”

A movie from before the time when motion pictures existed

shows the current locations and orbits of the Jovian planets (Jupiter through Neptune) and the current locations of various distant minor bodies

Mathematical recreations and land surveying joined when Thompson submitted a question to the 1766 Gentleman’s Diary connected to the Atherstone Enclosure of 1765