174. A particular star is at a distance of about 8.1 × 10^13 km from the Earth. Assuring that light travels at 3 × 10^8 m per second, find how long does light takes from that star to reach the Earth. 174. A particular star is at a distance of about 8.1 × 10^13 km from the Earth. Assuring that light travels at 3 × 10^8 m per second find how long does light takes from that star to reach the Earth. August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related