PauliEffect
15th September 2012, 02:23 PM
It has been proposed that there should be a 10th planet in the solar system,
this planet should somehow be related to aliens and Niburu should be
undetected. At the time when Niburu was brought into media, there may
still have been ideas around a 10th planet. Now we know so much more
and to my knowledge there are only 8 real planets and several dwarf-planets.
A real planet will clear its path in space over time. For example if Pluto and
Neptune will ever meet (which is possible), Pluto will be swallowed and the
path of Neptune will be almost the same as before.
A dwarf-planet will be able to shape itself (http://en.wikipedia.org/wiki/Dwarf_planet) by gravitational forces, which a big
rock has trouble to do. This means that a dwarf-planet will at least become
elipsoid by the gravitational and rotational force, but not necessarily
completely spherical.
To compare Pluto and the Moon, we know that the Moon has about 1 %
of Earth's mass. Pluto in turn has only 20 % of the Moon's mass. So it's
clear that Pluto is a significantly smaller object than our (small) Earth.
The biggest moon (Charon) of Pluto has such a mass that the combination
of Pluto-Charon could be considered to be a double planet as its unclear
what object rotates around the other, but by current definition Charon is
considered to be a moon of Pluto.
Eris, the biggest dwarf-planet has only 30 % of our Moons mass, so if
our Moon would ever break free from Earth, the Moon would be our Solar
System's biggest (?) dwarf-planet.
A few moons around Jupiter are even bigger than our Moon. Ganymedes
is 2 times as large as our Moon. Ganymedes has 2 % the mass of Earth.
Ceres may be one of the smallest dwarf-planet of them all, but it still has
more fresh water on its surface than exists fresh water on all of the Earth.
The planets and dwarf-planets (dashed -) are to date 13 in number, with
some large possible dwarf-planets (asterisked *). Moons in parenthesis
are known moons to date. From inside out:
Mercury
Venus
Earth (1 moon)
Mars (2 moons)
- Ceres (http://en.wikipedia.org/wiki/Ceres_%28dwarf_planet%29)
Jupiter (67 moons)
Saturn (62 moons)
Uranus (27 moons)
Neptune (13 moons)
- Pluto (http://en.wikipedia.org/wiki/Pluto) (5 moons)
* Orcus (http://en.wikipedia.org/wiki/90482_Orcus) (1 moon)
* Salacia (http://en.wikipedia.org/wiki/120347_Salacia) (1 moon)
* Quaoar (http://en.wikipedia.org/wiki/Quaoar) (1 moon)
* Ixion (http://en.wikipedia.org/wiki/28978_Ixion)
* Varuna (http://en.wikipedia.org/wiki/20000_Varuna)
- Haumea (http://en.wikipedia.org/wiki/Haumea_%28dwarf_planet%29) (2 moons)
- Makemake (http://en.wikipedia.org/wiki/Makemake_%28dwarf_planet%29)
- Eris (http://en.wikipedia.org/wiki/Eris_%28dwarf_planet%29) (1 moon)
* "2007 OR10 (http://en.wikipedia.org/wiki/2007_OR10)"
* Sedna (http://en.wikipedia.org/wiki/90377_Sedna)
It has been noted that the possible number of dwarf-planets can be
in the range from 200 to 2000 inside the Öpik Cloud. Also note
that almost all the dwarf-planets have strong elliptic orbits, which
may alter their relative distance from the Sun (and each others
orbits).
What is worth to note is that not all planet orbits have been completely
cleared of smaller objects. Jupiter and other big planets still have objects
which move in and out of their orbital unstable Lagrangian points.
It should also be noted that there are regions in space with several objects,
which can drop out of orbit, either by gravitational pull when other objects
come close by or by direct collision with other large objects. I think that to
date the areas are divided into the following:
- Trojans (objects in a given planets orbit, usually at a Lagrangian point)
- Asteroid Belt (where Ceres orbits between Mars and Jupiter)
- Edgeworth Belt (where Pluto and Eris are located, outside of Neptune)
- Scattered Disc (elliptic-orbit objects sometimes outside the "well-defined" Edgeworth Belt)
- Detached Objects (objects completely outside the Edgeworth Belt)
- Öpik Cloud (objects further outside the Edgeworth Belt in a non-disc (ball) shaped region)
Of these regions it's clear that the Trojans and the Asteriod Belt are the most
easy to study as they are closest and most stationary to us. It's also clear that
the definition of a planet is not clear, as the Trojans may be in the same orbit
forever, unless they drop out of their Lagrangian point and collide with the planet
as Theia once did with Earth (due to Theia's large size).
What also is interesting is that several Trojans move in and out of their Lagrangian
points, specially those around Jupiter. If such a Trojan is exposed for a strong gravitational
pull and is _not_ swallowed by the planet, the Trojan will get a strong elliptical orbit,
possible ending up in the way of Earth.
Earth has at the current date only one Trojan (http://en.wikipedia.org/wiki/2010_TK7) and it's fairly stable in its unstable point,
probably due to its small mass.
There are also other objects flying by Earth's orbit, sometimes crossing it, like the
so called Earth's Second Moon (http://en.wikipedia.org/wiki/3753_Cruithne), but these objects also seem fairly stable.
---
Now, for a "planet Niburu" to sneak in and disturb or collide with Earth, it has to
produce some kind of gravitational effect on other planets, which would make us
detect it fairly early.
This means that Niburu, if it is planet-size big, either has to arrive at a sick speed,
so we're unable to detect it in time, defying some regular laws of physics, or it has
to be too small to be a planet, probably not even a dwarf-planet.
Even if it arrives from above or below the Solar System's rotational plane, it will
produce gravitational effects fairly early if it's a planet.
Planet X - the 10th planet
To get some kind of feeling for how little mass is needed to make a disturbance,
we can look at Wikipedia on this subject (http://en.wikipedia.org/wiki/10th_planet#Planet_X_disproved). There were thought that there existed
a 10th planet beyond Pluto due to Neptune's strange orbit.
But when the Voyager satellite passed by Neptune, it was discovered that the
mass of Neptune had been measured wrongly by 0.5 %, and the corrected mass
adjusted the calculations and removed the possibility for a 10th planet.
A planet Niburu is unlikely to exist, unless it is hidden or forcefully pushed into
the Solar System by advanced aliens.
this planet should somehow be related to aliens and Niburu should be
undetected. At the time when Niburu was brought into media, there may
still have been ideas around a 10th planet. Now we know so much more
and to my knowledge there are only 8 real planets and several dwarf-planets.
A real planet will clear its path in space over time. For example if Pluto and
Neptune will ever meet (which is possible), Pluto will be swallowed and the
path of Neptune will be almost the same as before.
A dwarf-planet will be able to shape itself (http://en.wikipedia.org/wiki/Dwarf_planet) by gravitational forces, which a big
rock has trouble to do. This means that a dwarf-planet will at least become
elipsoid by the gravitational and rotational force, but not necessarily
completely spherical.
To compare Pluto and the Moon, we know that the Moon has about 1 %
of Earth's mass. Pluto in turn has only 20 % of the Moon's mass. So it's
clear that Pluto is a significantly smaller object than our (small) Earth.
The biggest moon (Charon) of Pluto has such a mass that the combination
of Pluto-Charon could be considered to be a double planet as its unclear
what object rotates around the other, but by current definition Charon is
considered to be a moon of Pluto.
Eris, the biggest dwarf-planet has only 30 % of our Moons mass, so if
our Moon would ever break free from Earth, the Moon would be our Solar
System's biggest (?) dwarf-planet.
A few moons around Jupiter are even bigger than our Moon. Ganymedes
is 2 times as large as our Moon. Ganymedes has 2 % the mass of Earth.
Ceres may be one of the smallest dwarf-planet of them all, but it still has
more fresh water on its surface than exists fresh water on all of the Earth.
The planets and dwarf-planets (dashed -) are to date 13 in number, with
some large possible dwarf-planets (asterisked *). Moons in parenthesis
are known moons to date. From inside out:
Mercury
Venus
Earth (1 moon)
Mars (2 moons)
- Ceres (http://en.wikipedia.org/wiki/Ceres_%28dwarf_planet%29)
Jupiter (67 moons)
Saturn (62 moons)
Uranus (27 moons)
Neptune (13 moons)
- Pluto (http://en.wikipedia.org/wiki/Pluto) (5 moons)
* Orcus (http://en.wikipedia.org/wiki/90482_Orcus) (1 moon)
* Salacia (http://en.wikipedia.org/wiki/120347_Salacia) (1 moon)
* Quaoar (http://en.wikipedia.org/wiki/Quaoar) (1 moon)
* Ixion (http://en.wikipedia.org/wiki/28978_Ixion)
* Varuna (http://en.wikipedia.org/wiki/20000_Varuna)
- Haumea (http://en.wikipedia.org/wiki/Haumea_%28dwarf_planet%29) (2 moons)
- Makemake (http://en.wikipedia.org/wiki/Makemake_%28dwarf_planet%29)
- Eris (http://en.wikipedia.org/wiki/Eris_%28dwarf_planet%29) (1 moon)
* "2007 OR10 (http://en.wikipedia.org/wiki/2007_OR10)"
* Sedna (http://en.wikipedia.org/wiki/90377_Sedna)
It has been noted that the possible number of dwarf-planets can be
in the range from 200 to 2000 inside the Öpik Cloud. Also note
that almost all the dwarf-planets have strong elliptic orbits, which
may alter their relative distance from the Sun (and each others
orbits).
What is worth to note is that not all planet orbits have been completely
cleared of smaller objects. Jupiter and other big planets still have objects
which move in and out of their orbital unstable Lagrangian points.
It should also be noted that there are regions in space with several objects,
which can drop out of orbit, either by gravitational pull when other objects
come close by or by direct collision with other large objects. I think that to
date the areas are divided into the following:
- Trojans (objects in a given planets orbit, usually at a Lagrangian point)
- Asteroid Belt (where Ceres orbits between Mars and Jupiter)
- Edgeworth Belt (where Pluto and Eris are located, outside of Neptune)
- Scattered Disc (elliptic-orbit objects sometimes outside the "well-defined" Edgeworth Belt)
- Detached Objects (objects completely outside the Edgeworth Belt)
- Öpik Cloud (objects further outside the Edgeworth Belt in a non-disc (ball) shaped region)
Of these regions it's clear that the Trojans and the Asteriod Belt are the most
easy to study as they are closest and most stationary to us. It's also clear that
the definition of a planet is not clear, as the Trojans may be in the same orbit
forever, unless they drop out of their Lagrangian point and collide with the planet
as Theia once did with Earth (due to Theia's large size).
What also is interesting is that several Trojans move in and out of their Lagrangian
points, specially those around Jupiter. If such a Trojan is exposed for a strong gravitational
pull and is _not_ swallowed by the planet, the Trojan will get a strong elliptical orbit,
possible ending up in the way of Earth.
Earth has at the current date only one Trojan (http://en.wikipedia.org/wiki/2010_TK7) and it's fairly stable in its unstable point,
probably due to its small mass.
There are also other objects flying by Earth's orbit, sometimes crossing it, like the
so called Earth's Second Moon (http://en.wikipedia.org/wiki/3753_Cruithne), but these objects also seem fairly stable.
---
Now, for a "planet Niburu" to sneak in and disturb or collide with Earth, it has to
produce some kind of gravitational effect on other planets, which would make us
detect it fairly early.
This means that Niburu, if it is planet-size big, either has to arrive at a sick speed,
so we're unable to detect it in time, defying some regular laws of physics, or it has
to be too small to be a planet, probably not even a dwarf-planet.
Even if it arrives from above or below the Solar System's rotational plane, it will
produce gravitational effects fairly early if it's a planet.
Planet X - the 10th planet
To get some kind of feeling for how little mass is needed to make a disturbance,
we can look at Wikipedia on this subject (http://en.wikipedia.org/wiki/10th_planet#Planet_X_disproved). There were thought that there existed
a 10th planet beyond Pluto due to Neptune's strange orbit.
But when the Voyager satellite passed by Neptune, it was discovered that the
mass of Neptune had been measured wrongly by 0.5 %, and the corrected mass
adjusted the calculations and removed the possibility for a 10th planet.
A planet Niburu is unlikely to exist, unless it is hidden or forcefully pushed into
the Solar System by advanced aliens.