# What is the scientific notation for distance from Earth to Alpha Centauri? The distance from Earth to the nearest star outside the solar system is approximately 25,700,000,000,000 miles.

$2.57 \times {10}^{13}$
Putting this value into scientific notation involves moving the decimal next to the last digit to the left (2) and multiplying by a power of ten that makes the numbers equal. There are 13 decimal places from two to the last zero so the decimal point has to be moved 13 times or ${10}^{13}$ This means that
$25700 000 000 000 = 2.57 \times {10}^{13}$