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wallace bell · Jan 29, 2009, 06:09 PM

How many light years are there from the earth to jupiter

bones252100 · Jan 29, 2009, 07:30 PM

A light-year is the distance travelled by light in one year, which is 9 trillion, 460 billion, 730 million, 472 thousand and 581 kilometres. In other words, almost 10,000 billion kilometres.
First, it should be said that a light year is a measure of distance, not time (which I know is a little confusing from its name!). The minimum distance between Jupiter and Earth is 588 million km (365 million miles). Since one light year (the distance light travels in one year) is approximately 5,870,000,000,000 miles, the minimum distance between Jupiter and Earth is 0.0000621 light years. However, Jupiter is not always the same distance from Earth!

Capuchin · Jan 30, 2009, 04:54 AM

Originally Posted by bones252100

A light-year is the distance travelled by light in one year, which is 9 trillion, 460 billion, 730 million, 472 thousand and 581 kilometres. In other words, almost 10,000 billion kilometres.
First, it should be said that a light year is a measure of distance, not time (which I know is a little confusing from its name!). The minimum distance between Jupiter and Earth is 588 million km (365 million miles). Since one light year (the distance light travels in one year) is approximately 5,870,000,000,000 miles, the minimum distance between Jupiter and Earth is 0.0000621 light years. However, Jupiter is not always the same distance from Earth!

Just to make it a bit more of a manageable number, 0.0000621 light years is about 32 light minutes :)

sarnian · Jan 31, 2009, 07:37 PM

Originally Posted by wallace bell

How many light years are there from the earth to jupiter

Light travels at 300000 Km per second.
Planet Earth has an average distance to the sun of 152 million Km, so it takes light from the sun 8 minutes and 27 seconds to reach us.

The distance from planet Earth to planet Jupiter varies : an average of approx. 778 million Km. So it takes light from Jupiter some 43 minutes to reach us.

A light year is a gigantic distance : 1 x 365 x 24 x 60 x 60 x 300000 Km = 9,46 × 10*12 Km.

Within the solar system all distances are normally calculated in Kms, light hours, minutes, seconds.
Outside the solar system all distances are calculated in light years or parsecs (= 3.26 light-years).
Our Milky Way galaxy is approx. 100 Kilo light years in diameter.
Distance to the nearest galaxies : Magellan clouds = 160 - 210 Kilo light years ; Andromeda (M31) = 2,9 Million light years.