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Our Solar System As Seen By Alien Astronomers


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#1    UM-Bot

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Posted 13 February 2002 - 12:46 PM

If alien astronomers from a nearby star system pointed their version of the Hubble Space Telescope at Earth, astronomer Markus Landgraf believes they would not see our planet but they would find hints of our presence.

With their infrared camera, the smart aliens would detect a vast donut-shaped ring of dust with a classic hole in the middle, all surrounding a yellow star. A little math, Landgraf says, and they could deduce the presence of a large planet, like Jupiter, that had cleared out the hole. They would also spot Neptune's signature scrawled in the dust.

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http://www.space.com/scienceastronomy/astronomy/dust_view_020212-1.html

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#2    Dowdy

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Posted 13 February 2002 - 01:23 PM

this is a bit irrelevant to the topic but it's on space anyway. I saw this documentry a few days ago with Sam Neil as host and he brought up some interesting facts but in particular he mentioned about the number of stars in the galaxy. He said For every grain of sand on a beach there are about one million stars. So 2 grains of sand, 2 million stars (and he was talking about all the beaches on the world).

NOW THAT IS ALOT OF  STARS!!!!!!!!

Edited by Kismit, 05 November 2004 - 04:02 AM.

THE PAOMNNEHAL PWEOR OF THE HMUAN MNID Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoatnt tihng is taht the frist and lsat ltteer be in the rghit pclae. The rset can be a taotl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Amzanig huh? I cdnuolt blveiee taht I cluod aulaclty uesdnatnrd waht I was rdgnieg. Can you? ;)

#3    Saru

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Posted 13 February 2002 - 01:36 PM

Dowdy,

I can remember seeing that series a few months ago, it was called quite simply - "Space".

I also remember that part about the grains of sand. He said "There are more stars in the universe than there are grains of sand on every beach on earth". I doubt anyone could really give a very accurate estimate for the number of grains of sand on the planet, but it just goes to show how many stars there are out there.

Quite a few, to say the least.

;D


#4    Dowdy

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Posted 14 February 2002 - 06:36 AM

Well actually the show was called The Big Picture and for all you Aussies out there it's on again Tuesday February 19th on the ABC @ 9:30pm

I think when people say"There are more stars in the universe than there are grains of sand on every beach on earth" or "For every grain of sand on a beach there are about one million stars" it's just scientific way of saying that space is infinite

THE PAOMNNEHAL PWEOR OF THE HMUAN MNID Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoatnt tihng is taht the frist and lsat ltteer be in the rghit pclae. The rset can be a taotl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Amzanig huh? I cdnuolt blveiee taht I cluod aulaclty uesdnatnrd waht I was rdgnieg. Can you? ;)

#5    Saru

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Posted 14 February 2002 - 11:42 AM

Dowdy,

Ah, you must have a different name for that series in Australia, either that or Sam Neil has presented more than 1 space documentary series, which is a distinct possibility.

I heard recently a suggestion that the actual amount of stars in the universe may be exaggerated by some sort of cosmic "reflection" much in the same way as you see many of yourself when walking into a hall of mirrors. They suggested that some galaxies may be reflections of other galaxies, including our own. This is a bit of a wild theory, and there is little evidence to support it, but if it's true, then perhaps the number of stars out there isn't as incredible as we believe it to be.


#6    PurpleStuart

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Posted 20 March 2002 - 10:37 PM

Was that something to do with the time it took for the light to travel here or for another reason?

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#7    Sheff_Pud

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Posted 21 March 2002 - 12:40 AM

A bit of a pointless argument this isn't it.
A hell of a lot is just a hell of a lot and it doesn't really matter how many give or take a zillion or so does it?  :s03

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#8    PurpleStuart

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Posted 21 March 2002 - 12:47 AM

good point, well made  ;D

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