Radar measurements on Mars show signs of ancient delta and water

Liquid water on ancient Mars seems to be essentially confirmed now.

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Oslo ,Norway ,David Paige ,Svein Erik Hamran ,California Institute Of Technology Jet Propulsion Laboratory ,University Of Oslo ,Mars Perseverance Rover ,Jezero Crater Western Delta ,Tor Berger ,California Institute ,Technology Jet Propulsion Laboratory ,Jezero Crater ,Radar Imager ,Mar Subsurface ,