【實用娛樂app】Birth Star|最夯免費app-綠色工廠好玩App

Light is very fast.. But stars are very far away.The light leaving from a star takes years to reach the Earth. How many years? For some stars exactly your age.. That will be a close one if you are young.. or a far one if you are not so young.Use this app to know which is yours!The nearest star (Proxima Centauri) is about 4ly from the Earth, so it takes about 4 years for the light to reach our planet. So when you were 4 years old.. if you watched at Proxima Centauri you could see the light generated when you were born.This happened again when you were about 6 years old, if you watched at Barnard's Star (5.9ly). While you age, the light from more distant stars keeps reaching the earth, and the long journey it took means it still left from that greatly distant place on the day of your birth. if you watch at the right star at the right time!The photos of the stars are real photos taken from 2MASS and WISE surveys.