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March 1, 2005

HD 107146


The Hubble Space Telescope took this picture of starlit asteroidal and cometary debris encircling the yellow dwarf star HD 107146.

The disc marks an early stage of planetary formation.

Between 30 million and 250 million years old, HD 107146 is a much younger cousin of our 4.5 billion-year-old sun.

Once upon a time, billions of years ago, our Earth and in fact every person on it — past, present and future — were components of a disc just like the one in the (false-color) photograph above.

HD 107146 is 88 light-years from Earth.

Remember, when you consider such statements, that light-years are units of distance, not time.

One light-year is the distance traveled by light (at 186,000 miles/second) in one year.

That's 5,865,696,000,000 miles, in case you don't have a calculator handy.

HD 107146 is 88 times further away.

What a long, strange trip that's gonna be.

March 1, 2005 at 11:01 AM | Permalink


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I should ask my nine year old to write a number sentence of that. Whew!

Cool blog. Found you via Scott at Blankbaby. Will be back.

Posted by: Brad | Mar 1, 2005 1:09:55 PM

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