12000km
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214,000 miles
10000 to 12000 miles per year
Last year (2012), Pioneer 10 was 1.6*1010 kilometres from the earth. Pioneer 11 was 1.3*1010 km away.
There are only 31,536,000 seconds in a year. So, light can only travel for 31,536,000 in a year.
Mode average year is 365 days = 8760 hours Median average year is 365.5 days = 8772 hours Mean average year is approximately 365.2425 days = 8765.82 hours