BlogHide Resteemsshohidullah (25)in utopian-in • 6 years agoFLOWERshohidullah (25)in introduceyourself • 6 years agoHow did scientists make this discovery?Using a radar instrument called Marsis on the Mars Express orbiter, researchers from the European Space Agency beamed radar waves at the Martian surface. Radar is able to penetrate the ground. In…shohidullah (25)in photograph • 6 years agogood morningshohidullah (25)in life • 6 years agomy pic