Simulation: Earth-like planets form in the wake of giants

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Topic:	Science > Physics
User:	"Sam Wormley"
Date:	08 Sep 2006 09:36:14 PM
Object:	Simulation: Earth-like planets form in the wake of giants

Earth-like planets form in the wake of giants (Sep 8)
http://physicsweb.org/article/news/10/9/4
Simulations have revealed that Earth-like planets can be formed with
some help from a wandering giant. Astrophysicists in the US have shown
that planet formation can occur after a giant planet has migrated
through the "habitable zone" -- the orbital region where
Earth-like planets could exist (Science 313 1413).
.

User: "Sorcerer"
Title: Re: Simulation: Earth-like planets form in the wake of giants	08 Sep 2006 10:14:42 PM

"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:yMpMg.133755$FQ1.89231@attbi_s71...
| Earth-like planets form in the wake of giants (Sep 8)
| http://physicsweb.org/article/news/10/9/4
|
| Simulations have revealed that Earth-like planets can be formed with
| some help from a wandering giant. Astrophysicists in the US have shown
| that planet formation can occur after a giant planet has migrated
| through the "habitable zone" -- the orbital region where
| Earth-like planets could exist (Science 313 1413).
Whilst Mars, Venus and Mercury are of roughly the same size
compared to Jupiter, I'd hardly call them "Earth-like" or "habitable".
The Moon played a very important part in our evolution,
producing tides which gave Earth a changing shoreline and
encouraged sea life to come on land. The other planets
do not have that, so even though Astrophysicists in the US have
shown that planet formation can occur after a giant planet has
migrated, they are still US phuckwits if they think that makes
for habitability.
Androcles
.

User: "The Ghost In The Machine"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 01:00:02 AM

In sci.physics, Sorcerer
<Headmaster@hogwarts.physics_b>
wrote
on Sat, 09 Sep 2006 03:14:42 GMT
<CkqMg.11501$89.6435@fe1.news.blueyonder.co.uk>:

Name Equatorial Diameter Mass
Moon 3.4762 * 10^5 m 7.35 * 10^22 kg
(0.273) (0.0123)
Mercury 4.8794 * 10^6 m 3.302 * 10^23 kg
(0.383) (0.055)
Mars 6.8049 * 10^6 m 6.4185 * 10^23 kg
(0.533) (0.107)
Venus 1.21037 * 10^7 m 4.8685 * 10^24 kg
(0.949) (0.815)
Earth 1.2756 * 10^7 m 5.9742 * 10^24 kg
(1) (1)
Jupiter 1.42984 * 10^8 m 1.899 * 10^27 kg
(11.209) (317.8)
and just for the sake of completeness:
Name Mean Diameter Mass
Sun/Sol 1.392*10^9 m 1.988435±0.000027*10^30 kg
(109) (332946)
I'd hardly call them "roughly the same size". :-P Maybe
if one compared The Great Red Spot to the Earth, but not
all of Jupiter... :-)

The Moon played a very important part in our evolution,
producing tides which gave Earth a changing shoreline and
encouraged sea life to come on land. The other planets
do not have that, so even though Astrophysicists in the US have
shown that planet formation can occur after a giant planet has
migrated, they are still US phuckwits if they think that makes
for habitability.
Androcles

There's also the large hunk of rock slamming into the Earth
in its infancy, gouging out the Pacific Basin and thinning
our atmosphere considerably. Unusual coincidences.
In any event, we won't know until we receive sentient
radio signals, or go there and look. The former is
rather easier... :-)
--
#191,

Windows Vista. Because it's time to refresh your hardware. Trust us.
.

User: "Sorcerer"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 08:25:56 AM

User: "The Ghost In The Machine"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 11:00:16 AM

In sci.physics, Sorcerer
<Headmaster@hogwarts.physics_b>
wrote
on Sat, 09 Sep 2006 13:25:56 GMT
<EhzMg.16281$89.13703@fe1.news.blueyonder.co.uk>:

So Einstein's head is the same size as yours?

[rest snipped]

--
#191,

Windows Vista. Because it's time to refresh your hardware. Trust us.
.

User: "Sorcerer"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 11:23:54 AM

"The Ghost In The Machine" <ewill@sirius.tg00suus7038.net> wrote in message
news:7a4bt3-su4.ln1@sirius.tg00suus7038.net...
| In sci.physics, Sorcerer
| <Headmaster@hogwarts.physics_b>
| wrote
| on Sat, 09 Sep 2006 13:25:56 GMT
| <EhzMg.16281$89.13703@fe1.news.blueyonder.co.uk>:
| >
| > "The Ghost In The Machine" <ewill@sirius.tg00suus7038.net> wrote in
message
| > news:99v9t3-ogj.ln1@sirius.tg00suus7038.net...
| > | In sci.physics, Sorcerer
| > | <Headmaster@hogwarts.physics_b>
| > | wrote
| > | on Sat, 09 Sep 2006 03:14:42 GMT
| > | <CkqMg.11501$89.6435@fe1.news.blueyonder.co.uk>:
| > | >
| > | > "Sam Wormley" <swormley1@mchsi.com> wrote in message
| > | > news:yMpMg.133755$FQ1.89231@attbi_s71...
| > | > | Earth-like planets form in the wake of giants (Sep 8)
| > | > | http://physicsweb.org/article/news/10/9/4
| > | > |
| > | > | Simulations have revealed that Earth-like planets can be formed
| > with
| > | > | some help from a wandering giant. Astrophysicists in the US
have
| > shown
| > | > | that planet formation can occur after a giant planet has
migrated
| > | > | through the "habitable zone" -- the orbital region where
| > | > | Earth-like planets could exist (Science 313 1413).
| > | >
| > | >
| > | > Whilst Mars, Venus and Mercury are of roughly the same size
| > | > compared to Jupiter, I'd hardly call them "Earth-like" or
"habitable".
| > |
| > | Name Equatorial Diameter Mass
| > |
| > | Moon 3.4762 * 10^5 m 7.35 * 10^22 kg
| > | (0.273) (0.0123)
| > |
| > | Mercury 4.8794 * 10^6 m 3.302 * 10^23 kg
| > | (0.383) (0.055)
| > |
| > | Mars 6.8049 * 10^6 m 6.4185 * 10^23 kg
| > | (0.533) (0.107)
| > |
| > | Venus 1.21037 * 10^7 m 4.8685 * 10^24 kg
| > | (0.949) (0.815)
| > |
| > | Earth 1.2756 * 10^7 m 5.9742 * 10^24 kg
| > | (1) (1)
| > |
| > | Jupiter 1.42984 * 10^8 m 1.899 * 10^27 kg
| > | (11.209) (317.8)
| > |
| > | and just for the sake of completeness:
| > |
| > | Name Mean Diameter Mass
| > |
| > | Sun/Sol 1.392*10^9 m 1.988435±0.000027*10^30 kg
| > | (109) (332946)
| > |
| > | I'd hardly call them "roughly the same size". :-P
| >
| >
| > All glass marbles are of roughly the same size compared to
| > an air-filled football, even if you'd hardly call them that, fuckhead.
|
| So Einstein's head is the same size as yours?
|
His was much bigger, I don't go around bragging about how
smart I am the way he did.
http://www.androcles01.pwp.blueyonder.co.uk/Smart/Smart.htm
'Really, this is what is meant by the Fourth Dimension, though some people
who talk about the Fourth Dimension do not know they mean it. It is only
another way of looking at Time. There is no difference between Time and any
of the three dimensions of Space except that our consciousness moves along
with it.' -- Herbert George Wells - "The Time Machine" - 1895.
"The secret to creativity is knowing how to hide your sources." -- Einstein
Einstein's source was a sci-fi writer, Einstein was a plagiarist sci-fi
writer.
a.. "The only thing that interferes with my learning is my education." -
Einstein.
The whole of science is nothing more than a refinement of everyday
thinking." - Einstein
a.. "Do not worry about your difficulties in Mathematics. I can assure you
mine are still greater." -- Einstein.
Many a true word is spoken in jest.
Androcles.
| > [rest snipped]
| >
|
|
| --
| #191,

| Windows Vista. Because it's time to refresh your hardware. Trust us.
.

User: "Ben newsam"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 06:36:29 AM

On Sat, 09 Sep 2006 03:14:42 GMT, "Sorcerer"
<Headmaster@hogwarts.physics_b> wrote:

"Sam Wormley" <swormley1@mchsi.com> wrote in message
news:yMpMg.133755$FQ1.89231@attbi_s71...
| Earth-like planets form in the wake of giants (Sep 8)
| http://physicsweb.org/article/news/10/9/4
|
| Simulations have revealed that Earth-like planets can be formed with
| some help from a wandering giant. Astrophysicists in the US have shown
| that planet formation can occur after a giant planet has migrated
| through the "habitable zone" -- the orbital region where
| Earth-like planets could exist (Science 313 1413).

Whilst Mars, Venus and Mercury are of roughly the same size
compared to Jupiter, I'd hardly call them "Earth-like" or "habitable".
The Moon played a very important part in our evolution,
producing tides which gave Earth a changing shoreline and
encouraged sea life to come on land. The other planets
do not have that, so even though Astrophysicists in the US have
shown that planet formation can occur after a giant planet has
migrated, they are still US phuckwits if they think that makes
for habitability.

He didn't mention the evolution of life, he was only discussing planet
formation.
--
Posted via a free Usenet account from http://www.teranews.com
.

User: "Sorcerer"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 08:25:56 AM

User: "Ben newsam"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 10:09:16 AM

On Sat, 09 Sep 2006 13:25:56 GMT, "Sorcerer"
<Headmaster@hogwarts.physics_b> wrote:

It means the effective distance from a star such that, if a planet
were to form there, life (as we know it) could possibly evolve. ie,
Pluto is a non-starter (quit apart from not being a proper planet),
and so is Mercury.
--
Posted via a free Usenet account from http://www.teranews.com
.

User: "Sorcerer"
Title: Re: Simulation: Earth-like planets form in the wake of giants	09 Sep 2006 10:18:50 AM

"Ben newsam" <ben.newsam@ukonline.co.uk> wrote in message
news:u3m5g29m9uil66fj26d926du6dlblidk6h@4ax.com...
| On Sat, 09 Sep 2006 13:25:56 GMT, "Sorcerer"
| <Headmaster@hogwarts.physics_b> wrote:
|
| >
| >"Ben newsam" <ben.newsam@ukonline.co.uk> wrote in message
| >news:ro95g2tr9npd48382ps4thomo5jg0so9g3@4ax.com...
| >| On Sat, 09 Sep 2006 03:14:42 GMT, "Sorcerer"
| >| <Headmaster@hogwarts.physics_b> wrote:
| >|
| >| >
| >| >"Sam Wormley" <swormley1@mchsi.com> wrote in message
| >| >news:yMpMg.133755$FQ1.89231@attbi_s71...
| >| >| Earth-like planets form in the wake of giants (Sep 8)
| >| >| http://physicsweb.org/article/news/10/9/4
| >| >|
| >| >| Simulations have revealed that Earth-like planets can be formed
with
| >| >| some help from a wandering giant. Astrophysicists in the US have
| >shown
| >| >| that planet formation can occur after a giant planet has migrated
| >| >| through the "habitable zone" -- the orbital region where
| >| >| Earth-like planets could exist (Science 313 1413).
| >| >
| >| >
| >| >Whilst Mars, Venus and Mercury are of roughly the same size
| >| >compared to Jupiter, I'd hardly call them "Earth-like" or "habitable".
| >| >The Moon played a very important part in our evolution,
| >| >producing tides which gave Earth a changing shoreline and
| >| >encouraged sea life to come on land. The other planets
| >| >do not have that, so even though Astrophysicists in the US have
| >| > shown that planet formation can occur after a giant planet has
| >| >migrated, they are still US phuckwits if they think that makes
| >| >for habitability.
| >|
| >| He didn't mention the evolution of life, he was only discussing planet
| >| formation.
| >
| >Someone mentioned "habitable zone" . What the ***** is that all about
| >if not life?
|
| It means the effective distance from a star such that, if a planet
| were to form there, life (as we know it) could possibly evolve.
"He didn't mention the evolution of life, he was only discussing planet
formation." -- Ben Newsam
| ie,
| Pluto is a non-starter (quit apart from not being a proper planet),
| and so is Mercury.
Yeah, I wanna know when Halley's planet is coming back.
BTW, planets do NOT "form there". They can be shepherded
into position but they are already formed. See Bode's law.
Androcles.
.

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