Tag Archives: lightyear

Light yearThe nearest star to oursolar system is ProximaCentauri. It is at a distance of2,68,770 AU. We can note herethat using AU for measuringdistances of stars would be unwieldy. Therefore,astronomers use a special unit, called ‘lightyear’, for measuring the distance in deep space.We have learnt that the speed of light in vacuumis 3 × 108Continue reading “What is light year?”