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SergeantQueen's avatar

What is 1.46966e+17 written out?

Asked by SergeantQueen (13305points) 1 day ago

I am wanting to know the distance between Sagittarius A*, a super massive black hole, and earth, in miles. It is 25,000 light years away which is 1.46966e+17 miles but I do not know how to read this

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8 Answers

SergeantQueen's avatar

A light year is 6 trillion, or 6,000,000,000,000 miles.

and the black hole is 25,000 light years away.

6,000,000,000,000 × 25,000= 1.50000000E+17 and I want to see it written out

SergeantQueen's avatar

5,878,625,370,000 miles to be exact I think

Brian1946's avatar

1.46966e+17 is 1.46966×10 exponent 17 (10 to the 17th power)=146,966,000,000,000,000 miles.

Brian1946's avatar

I.e., 146 quadrillion, 966 trillion miles.

Lightlyseared's avatar

146966000000000000

Zaku's avatar

Except a light year is 9460730472580.8 km, which is approximately 5.88 trillion miles (not 6 trillion miles).

And that black hole is about 26996±33 light years away (not 25,000).

So more accurately, 9460730472580.8 km x 26996 ly x 0.62137119 miles / km = 1.58699370003045e+017 miles.

i.e. about 158,699,370,003,045,000 miles, with some rounding error, and even without rounding error, we only know within an error margin of about 66 light years.

(BTW, the “e+n” stands for “multiply by 10, n times”.)

SergeantQueen's avatar

the lightyear thing was kind of corrected, did not realize the 25,000 was a bit off. I checked a few sites that said 25,000.

Thank you. I always wondered how you did that

zenvelo's avatar

Also, remember everything is moving at different rates and different directions, so any measure of the distance is continually changing, and probably off by a light year or more.

(Earth is at perihelion to the Sun today, closest we are all year, an example of how astronomical distances are always in flux).

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