Start Of Everything.

Scorpius Rising, photographed from Mt. Laguna, California. (Hendren Imaging)

Rick Sternbach’s 1976 cover for Under Pressure, by Frank Herbert

Charon, moon of Pluto, observed by NASA's New Horizons probe just before closest approach on this day in 2015. (It flew within 12,500 km of Pluto and as close as 27,000 km to Charon.)

Space & Sound.

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Flash Forward.

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Danny Flynn

Cesare Reggiani

Angus McKie

John Berkey cover art for The Best of Frederik Pohl, 1975.

HiPOD 18 Jan 2022: Icy Cliffs on Mars

This area, on the western edge of Milankovic Crater on Mars, has a thick deposit of sediment that covers a layer rich in ice. The ice is not obvious unless you look in color.

In the red-green-blue images that are close to what the human eye would see, the ice looks bright white, while the surroundings are a rusty red. The ice stands out even more clearly in the infrared-red-blue images where it has a striking bluish-purple tone while the surroundings have a yellowish-grey color.

The ice-rich material is most visible when the cliff is oriented east-west and is shielded from the sun as it arcs through the sky to the south.

Enhanced color image is less than 1 km across.

ID: ESP_071573_2350 date: 2 November 2021 altitude: 307 km

NASA/JPL/UArizona