mars as big as the moon

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  • Member since
    August, 2013
mars as big as the moon
Posted by Brucey on Thursday, August 22, 2013 7:05 PM
I got to work yesterday and a guy told me that mars was going to be the same size as the moon in the sky on the 27 of aug. I did have to belly laugh for a bit. Where do people come up with this stuff? Lol
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Posted by zachsdad on Thursday, August 22, 2013 9:34 PM

Simply Google 'Mars moon hoax' and you will find plenty of info about the origin (in 2003) of this annual misunderstanding. Or, search our archives for threads about it in past years.

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Posted by DaveMitsky on Friday, August 23, 2013 1:27 AM

At the time of its closest approach during the historic 2003 perihelic opposition, Mars subtended 25 arc seconds, which when magnified 75 times by a telescope would be approximately equal to the average apparent size of the Moon.  Unfortunately, the original message was passed on incorrectly year after year and became an infamous and unstoppable Internet meme.

www.skyandtelescope.com/.../3523496.html  (2006)

http://news.bbc.co.uk/2/hi/8184351.stm  (2009)

www.slate.com/.../mars_as_big_as_the_moon_no_just_no.html  (2013)

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Posted by DaveMitsky on Saturday, August 24, 2013 4:27 PM

Anyone who is interested in seeing what Mars and the other planets would look like if they were at the same distance as the Moon, should browse www.dailymail.co.uk/.../Photographer-Ron-Miller-creates-incredible-pictures-look-like-planets-closer.html

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Posted by Timthelder on Wednesday, August 28, 2013 4:13 PM

I guess it depends on one's vantage point.  So, those people who are seeing Mars nearly as big as the Moon....

Are actually standing someplace other than here on Earth.

Heh, heh.

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Posted by Poppa Chris on Wednesday, August 28, 2013 4:16 PM

I've actually seen Mars nearly twice as big as the Moon... Photoshop does wonders!!!  Laugh

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Posted by Timthelder on Wednesday, August 28, 2013 4:23 PM

I've seen the moon as big as the Sun when there's a solar eclipse Big Smile

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Posted by leo731 on Wednesday, August 28, 2013 4:23 PM

Thanks Dave, that was an interesting series of how the other planets would look if they were at lunar distance.  The old Mars deal will never die, I just hope over time it will fade away.

L

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Posted by Aratus on Wednesday, August 28, 2013 5:56 PM

It got me wondering at what distance from Mars I would have to be in order to see it at approximately the same size as the Moon.    Kicking Starry Night into 'Spaceship Mode' I took a trip towards Mars and stopped it when the size was about right.  (30 arc minutes)   The distance was around 780,000 km or 485,000 miles.

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Posted by Centaur on Monday, September 02, 2013 11:29 AM

It’s completely true.

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Posted by Aratus on Monday, September 02, 2013 1:13 PM

Ahh - so that explains it !!

Kepler's laws of planetary motion goes out the window though! Big Smile

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Posted by DaveMitsky on Wednesday, September 04, 2013 2:06 AM

Using the small angle formula and an average lunar apparent size of 31.7 arc minutes, Mars would be the same apparent size as the Moon at a distance of 441,941 miles.

Dave Mitsky

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Chance favors the prepared mind.

A man is a small thing, and the night is very large and full of wonders.

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Posted by DaveMitsky on Thursday, September 05, 2013 1:25 PM

Using an average lunar distance of 238,857 miles gives a slightly different average apparent diameter of 31.1 arc minutes and a distance of 467,473 miles.

Dave Mitsky

Sic itur ad astra!

Chance favors the prepared mind.

A man is a small thing, and the night is very large and full of wonders.

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Posted by DaveMitsky on Tuesday, September 10, 2013 3:04 AM

Click on www.youtube.com/watch for another comparison of how some of the planets would look if they were as close as the Moon.  

Dave Mitsky

Sic itur ad astra!

Chance favors the prepared mind.

A man is a small thing, and the night is very large and full of wonders.

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Posted by Silveradogold on Friday, October 11, 2013 12:16 PM

OOoohh Noooo,

This AGAIN !!?

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Tags: hoax , joke , mars , Moon , time , time-wasting

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