The dna is multiplied obviously
        
                    
             
        
        
        
Answer:
2200000 = 2.2E6 min for light from Proxima to reach earth
8.3 min from light sun to reach earth
2.2E6/8.3 = 2.56E5   times for light from Proxima
Proxima is about 256,000 times farther away than the sun
Since the sun is about 93,000,000 = 9.3E7 miles from earth
Proxima is then 9.3E7 * 2.56E5 = 2.4E13 miles away
Note - the speed of light is 
3.00E8 m/s * 60 s/min / 1000 m/km = 1.8E7 km/min as given
 
        
             
        
        
        
Answer:
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Explanation:
 
        
             
        
        
        
It makes the data thet they collect more reliable so if they need the data again, they have already tested it a few times so therefor they know that it is right.