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"Before we devised artificial lights and atmospheric pollution and modern forms of nocturnal entertainment we watched the stars. There were practical calendar reasons of course but there was more to it than that. Even today the most jaded city dweller can be unexpectedly moved upon encountering a clear night sky studded with thousands of twinkling stars. When it happens to me after all these years it still takes my breath away." -Carl Sagan

"[F]or those of us who can't readily accept the God formula, the big answers don't remain stone-written. We adjust to new conditions and discoveries. We are pliable. Love need not be a command nor faith a dictum. I am my own god. We are here to unlearn the teachings of the church, state, and our educational system. We are here to drink beer. We are here to kill war. We are here to laugh at the odds and live our lives so well that Death will tremble to take us." -Charles Bukowski

Landsat 1 launched 50 years ago on July 23, 1972. We celebrate the work of Landsat with a gallery of some of the best images captured by the satellite fleet.

Orbital imagery is one of the hot categories of the new space industry, but there’s more to it than meets the (human) eye. Pixxel has raised $25 million to launch a constellation of satellites that will provide hyperspectral imagery of the Earth: a wider slice of the electromagnetic spectrum that can reveal all kinds of […]

The advent of electrical lighting has allowed us to colonise the night. Not only have kilometres of street lighting e...