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Light Speed. Vocabulary: Light – Year: The distance light can travel in one year. HOW FAR CAN LIGHT TRAVEL?. 1 LIGHT SECOND = 186,000 thousand miles / sec 1 LIGHT MINUTE = 11,160,000 million miles / min 1 LIGHT HOUR = 669,600,000 million miles / hour
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Light Speed Vocabulary: Light – Year: The distance light can travel in one year.
HOW FAR CAN LIGHT TRAVEL? • 1 LIGHT SECOND= 186,000 thousand miles / sec • 1 LIGHT MINUTE= 11,160,000 million miles / min • 1 LIGHT HOUR = 669,600,000 million miles / hour • 1 LIGHT DAY = 16,070,400,000 billion miles / day • 1 LIGHT YEAR = 5,865,696,000,000 trillion miles/ yr Approx. 6 trillion miles a year
LIGHT FROM THE SUN THE SUN IS 93,150,000 MILES FROM US LIGHT TRAVELS 186,000 MILES IN 1 SECOND 93,150,000 / 186,000 = 500 SECONDS 500 / 60 = 8.3 MINUTES
POLARIS IS 431 LIGHT YEARS AWAY FROM US. • 6 TRILLION MILES X 431 = 2,586,000,000,000,000 Quadrillion MILES TO POLARIS • IT TAKES 431 YEARS FOR LIGHT FROM POLARIS TO REACH US
How far is the Betelgeuse star in Orion? ( one of the brightest stars in the night sky ) 1400 Light – Years away
How far is Sirius A – The brightest star in the night sky in Canis Major? 8.6 Light - Years
How far is KY Cygni ( The largest know star in existence ) It can be found in the constellation of Cygnus. It is 5,200 light – years away
SPACE TALK Step 1 = How far is Mercury from the earth = 144,150,000 km Step 2 = Light travels 300,000 km / sec Step 3 = 144,150,000 / 300,000 = 480 sec Step 4 = 480 sec / 60 = approx. 8 minutes to communicate with mercury satellite.