and that pesky v=d/t formula

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Presentation transcript:

and that pesky v=d/t formula Light space travel and that pesky v=d/t formula

Distances If you drive on a highway at 70 miles per hour in one hour you may get to downtown Portland. steady speed! If you keep on driving after 3 hours you would reach Tacoma, Washington. Steady speed - no stops!

If we could keep on and on - - If you could drive to the Moon at 70 miles per hour, 230,000 miles or about 400,000 km it would take you 3400 hours, or 140 days.

Light and heat comes from the Sun It is a long way away ! 146 million km or 93 million miles If you could drive to the Sun at 70 miles per hour it would take over 50 000 days. = 150 years – longer than we live !

Light and heat comes from the Sun It is a long way away ! 146 million km or 93 million miles If you could drive to the Sun at 70 miles per hour it would take over 50 000 days. = 150 years – longer than we live !

Light travels very, very fast! Guess how long it takes for light to come from the SUN to the Earth. 8 years 8 days 8 hours 8 minutes

It takes 8 minutes for light to reach us from the Sun! Light travels 300 000 kilometers through space every second!

Our fastest space probe. Voyager 1 is traveling at 17 km/s Our fastest space probe. Voyager 1 is traveling at 17 km/s. It will reach the nearest star to us in 27,000 years. If we could travel at light speed it would take only 4 years