Wednesday, 31 May 2017

High-Silica 'Halos' Shed Light on Wet Ancient Mars

Discolored Fracture Zones in Martian Sandstone

Pale "halos" around fractures in bedrock analyzed by NASA's Curiosity Mars rover contain copious silica, indicating that ancient Mars had liquid water for a long time.





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NASA’s Nancy Grace Roman Space Telescope Completed

Over the course of several hours, technicians meticulously connected the inner and outer segments of NASA’s Nancy Grace Roman Space Tel...