light travels an estimated seven trillion miles a year. If the sun is 96 million miles away from the earth. Then that means it is about one one hundreth of a light year away am i correct in that? And also if that is true then that means it takes one one-hundreth of a year for the light to get here. That means like three and a half days i think. So does that mean when you look at the sun you are seeing it three and a half days ago. If this is right i am fascinated by that arent you? And if it is wrong what did i calculate wrong i did it rather fast in my head so it probably is.
2006-12-21 11:26:25 · 8 answers · asked by Beaverscanttalk 4 in Science & Mathematics ➔ Astronomy & Space
The distance from the sun to the earth is approximately :
1.5 x10^11 m (93 million miles) away
The speed of light is approximately 3 x 10^8 ms-1
(approx 6*10^12 miles/ yr)
therefore 1.5 x10^11 / 3x10^8 = 500 seconds for light to travel from earth to sun
= 8mins 20 seconds.
Therefore we see the sun as it was 8 mins 20 secods ago.
You assumption that the earth is 1/100th of a light year from the sun is incorrect. the earth is actually 1/63240 th of a light year from the sun.
2006-12-21 11:54:17 · answer #1 · answered by Mike 4 · 1⤊ 1⤋
You are off in your calculation. The sun is about one hundred thousandth of a light year away (rather than a hundreth). This make it a bit over 8 light-minutes away. But, yes, when you look at the sun, you are seeing it as it was a bit more than 8 minutes ago.
Perhaps more interesting to you is that when you look at stars at night, you are seeing them as they were YEARS ago, not just days or minutes. Even the closest star is over 4 light years away.
2006-12-21 11:46:53 · answer #2 · answered by mathematician 7 · 2⤊ 1⤋
Light travels 186,000 miles per second (97 trillion miles per year). The sun is 93 million miles away and it takes the light from the sun 8 minutes to reach us.
2006-12-21 11:31:43 · answer #3 · answered by hyperhealer3 4 · 1⤊ 2⤋
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2016-10-15 09:55:27 · answer #4 · answered by ? 4 · 0⤊ 0⤋
On average, the distance between the earth and the sun is 93 million miles.
This is not anywhere near a light-year. It is more like 8.3 light-minutes.
2006-12-21 11:30:59 · answer #5 · answered by Исаак Озимов 3 · 1⤊ 2⤋
No, it only takes 8 minutes for the light to reach us. So you must have misunderstood the distance light travels. It's something like 186,000 miles an second.
2006-12-21 11:42:07 · answer #6 · answered by eri 7 · 1⤊ 2⤋
the sun's distance is about 8 lightminutes .. not days, just minutes
earth Distance to the sun is ~149.597.870 km
where light travles ~300.000 km/sec
makes it a traveltime of approx. 8.3 minutes
2006-12-21 11:31:03 · answer #7 · answered by blondnirvana 5 · 1⤊ 2⤋
Eight minutes and counting,feel the heat.
2006-12-22 13:52:43 · answer #8 · answered by Anonymous · 0⤊ 0⤋