Scientists find Mars had water 3.3 to 3.8 billion years ago

Q.  Scientists have found that the Red Planet had long lasting lakes and water streams __________ billion years ago.
- Published on 10 Oct 15

a. 3.3 to 3.5
b. 3.3 to 3.6
c. 3.3 to 3.7
d. 3.3 to 3.8

ANSWER: 3.3 to 3.8
 
Scientists have used data from the Curiosity rover to determine that water helped deposit sediments into the Gale Crater where the rover landed around 3 years ago and this has increased odds of life once existing on the Red Planet. Sediment deposited as larges formed the foundation for Mount Sharp on mars. Rover observations suggest that series of streams and rivers existed at some point between 3.3 to 3.8 billion years back, building up lower layers of Mount Sharp through sediment deposition. Findings built upon previous research indicating the presence of ancient lakes on Mars.

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