Thursday, 8 April 2021

Blue Dunes on the Red Planet


A sea of dark dunes, sculpted by the wind into long lines, surrounds Mars' northern polar cap and covers an area as big as Texas. via NASA https://ift.tt/31WMC6e

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A Brief Outburst

The Sun blew out a coronal mass ejection along with part of a solar filament over a three-hour period on Feb. 24, 2015. While some of the s...