... familiar central section of the crater which lifts up after impact. “The landscape is barren, but not empty. Bits of rocks exposed near the centre of the formerly giant crater hold the microscopic clues to the past...
... you would think they are biological, but on Mars, of course, the bar to prove that has to be quite a bit higher.” If bacteria is the cause, then it is possible it existed more than three billion years ago when Mars...
... throughout or a dense core formed is not certain, but at some point a catastrophic collision with another object smashed bits off the parent body. These re-accreted with mainly porous boulders to create a rubble-piled, top-shaped...
... Nouakchott [Mauritania]”, reported McDowell. In a discussion with ArsTechnica, the astronomer said that he would not be surprised if several bits of the core stage with masses of the order of 100 to 300kg hit the surface. Indeed, McDowell later...