bonjour
300 000 km/s = 300 000 x 3 600 = 1 080 000 000 km /h
= 1.08 x 10 ⁹
1.08 x 10 ⁹ x 24 x 365 = 9.4608 x 10 ¹²
Une AL = 9.4608 x 10 ¹² km
4.2 x 9.4608 x 10 ¹² = 3.973536 x 10 ¹³
Proxima se situe à 3.973536 x 10 ¹³ km
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bonjour
300 000 km/s = 300 000 x 3 600 = 1 080 000 000 km /h
= 1.08 x 10 ⁹
1.08 x 10 ⁹ x 24 x 365 = 9.4608 x 10 ¹²
Une AL = 9.4608 x 10 ¹² km
4.2 x 9.4608 x 10 ¹² = 3.973536 x 10 ¹³
Proxima se situe à 3.973536 x 10 ¹³ km