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More proof we gotta quit calling these things stars, planets, brown dwarfs, planemos, etc. I’ve been tryin to get people to realize they should called mascons – mass concentrations.
If you gotta classify them use qualifying terms like Primary Fusing Mascon, a star, Secondary Gaseous Mascon, a gas giant, Secondary Rocky Mascon, a rocky planet, Primary Gaseous Mascon, a rogue gas giant like this and so on ad nauseam, Especially useless is the term planet, a word from Greek meaning wanderer.
The word was not officially defined by science until 2006 when it was defined as (A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals.)
Originally there were seven planets the Sun, the Moon, Mercury, Venus, Mars, Jupiter, and Saturn all had one characteristic in common “they were wanderers” they moved the stars did not, therefore they had great mystic power. As the science of astronomy advanced the Sun and moon were understood to be different and were re-classified.
The 2006 definition seems to have satisfied almost no one. No wonder, we’re still trying to fit this square peg into a round hole. Drop the word and realize that these are all concentrations of mass and differ only in terms of mass and circumstances of formation (and perhaps composition).
I’ve been trying since 30 years ago, a time when none of these things had been discovered (but were perfectly predictable), to get this outdated terminology changed. No luck so far but discoveries like this keep proving me right.
Star and planet are fine words for the lay public but science needs a consistent classification scheme. One objection to this scheme is that is too complicated, Nuts. Sitting on my lap as I type this is a Felis Sylvestris Catus, I call it a cat. If you want to see complicated take a course in organic chemistry.
Originally posted by Illustronic
If anyone finds a Nature Journal article confirming the data I will eat crow.
Originally posted by grindhouzer
On a side note, tho these planets are pretty far away, people seem to think that if a planet the size of jupiter were near us, even light years away, it would have catastrophic results on our solar system?? 10 X jupiter size planets?? flying through our galaxy??
Someone explain plz?
The discovery raised the possibility that smaller, Earth-sized free-floating planets are yet to be detected and that such planets could support life
I mean according to celestial mechanics, it would be almost impossible for planets to escape the gravitational pull of the host star around which they have been orbiting for eons!
Originally posted by XRaDiiX
reply to post by dalloway
The problem with your statement is this has nothing to do with Nibiru. Nibiru is a purported planet; Tied gravitationally to the sun.
These rogue planets ( I've always thought it was possible for them to exists) are not gravitationally bound to a star so we can throw that out the window.
The only thing we can really think about thats possibly ties this with Nibiru is if our sun and/or other stars catch one of these rogue planets into a highly elliptical orbit like Nibiru's supposed to be.
edit on 19-5-2011 by XRaDiiX because: (no reason given)
While some of these exoplanets could potentially be orbiting a star from very far away, the majority of them most likely have no parent star at all, scientists say.
As the known number of more conventional exoplanets — that is, those that actually do orbit stars — has grown to more than 500 in recent years, astronomers have begun to realize that our own well-behaved Solar System isn't necessarily typical. The eight planets orbit the Sun in nearly circular orbits, all moving in the same direction as the Sun rotates. But plenty of alien worlds orbit their stars in eccentric, somewhat egg-shaped orbits and surprising numbers move around their stars in highly tilted orbits as well.
Chapter 2
The Parallaxes of Stars
Astronomers have tried to determine the distances to many stars by a method called Trigonometric Parallax. The distances that astronomers calculated using this method are used as yard sticks to determine distances of much farther objects. If this foundation is proven to be doubtful, then, automatically, the whole scale of measurements in astronomy regarding the distances of stars, star clusters, galaxies, etc. comes into question.
...
However, in practice, astronomers do not look through a telescope to measure the angle p for finding absolute parallax. After centuries of trying, they realised that measuring the angle is too difficult and complicated and for this reason, astronomers have abandoned measurement of absolute parallaxes completely. Instead, they have turned their attention to relative parallaxes.
...
As will be explained later, the parallaxes of background stars themselves could be so significant as to cancel all or a large proportion of the parallax of the object of interest and, as a result, give a totally false distance for the object.
...
The fact that a very large percentage (over 25%) of all the parallaxes that astronomers measure happen to be negative indicates that all those allegedly ‘background’ stars are actually closer to us than the stars of interest. It shows that there is a fundamental problem with the assumption about the background objects. Unfortunately, any measurements that happen to be negative or greater than an arc-second are discarded or ignored as systematic and random error.
...
In the following Chapters, evidence will be presented that many objects in the Milky Way that appear as distant stars are actually nearby planets. Further evidence will be given that at a distance of several times farther than Pluto there exist billions of large asteroids, thousands of planetoids and hundreds of planets that together with clouds of gas, dust, rocks and minerals appear as billions of stars. Since all these objects are very close to each other, from earth they all would show very small relative parallaxes, giving us the false idea that these objects are stars and are located at such great distances that the nearest one is thought to be 4.3 light-years away.
The reason Pluto is an exception is because it seems to appear as a star (that is a point of light with no visible disc) even with a large telescope. The reason Pluto could be classified as a planet rather than a star was on the basis of its apparent motion against other background objects.
“Pluto doesn’t stand out very well against the background of stars. It is detectable as a planet only by its very slow motion with respect to the stars.” 1
“The planet is so small that it looks like a star and it is only its motion across the sky that allows it to be distinguished as a planet. (McDonald Obervatory)”2
However, in practice, astronomers do not look through a telescope to measure the angle p for finding absolute parallax. After centuries of trying, they realised that measuring the angle is too difficult and complicated and for this reason, astronomers have abandoned measurement of absolute parallaxes completely. Instead, they have turned their attention to relative parallaxes.
The fact that a very large percentage (over 25%) of all the parallaxes that astronomers measure happen to be negative indicates that all those allegedly ‘background’ stars are actually closer to us than the stars of interest. It shows that there is a fundamental problem with the assumption about the background objects.
The reason Pluto is an exception is because it seems to appear as a star (that is a point of light with no visible disc) even with a large telescope. The reason Pluto could be classified as a planet rather than a star was on the basis of its apparent motion against other background objects.
The fact that the sun is a star with a high temperature and that it is a strong source of infrared radiation, it is reasonable to assume that any hot stars must be strong sources of infrared radiation. However, when astronomers mapped the sky and determined the infrared radiation from the blue and allegedly hot stars in the neighbourhood of the sun they were surprised and puzzled to learn that all these objects were not hot at all1. The following is a quote from NASA about blue stars that are not visible in the infrared spectrum, indicating that these blue objects are cold and do not radiate sufficient heat to be visible.
“Moving away from visible light towards longer wavelengths of light we enter the infrared region. In the near-infrared region, the hot blue stars seen clearly in visible light fade out and cooler stars such as red dwarfs and red giants come into view. …..…
Another method to distinguish a star from a planet is spectrum analysis of the light coming from any given object.
Stellar spectra were first observed in the middle of the 19th century. Harvard Professor Edward C. Pickering, the leading astronomer of his time, lettered the stars according to the strength of their hydrogen spectral lines. It was he who realized that all objects in the Milky Way had spectra very different from the sun.
Pickering examined various parts of the sky visible from the northern hemisphere. A large number of stars were studied by capturing their spectra on photographic plates. The conclusion he arrived at was very significant. He found that stars that resemble the sun in character are distributed with near uniformity over the surface of the sky. They almost evenly spread elsewhere as they are over the surface of the Milky Way. The whitish or bluish objects such as Sirius that have a group of strongly marked dark lines in their spectrum (indicating the existence of hydrogen as an important constituent in their atmosphere), are however, much more numerous, relatively speaking, on the Milky Way than in other parts of the sky.
A method that could be used to differentiate between stars and planets is to find out which ones are strong sources of x-rays or gamma rays. If we compare the sun with all the planets in the solar system, we see that the sun is a strong source of x-rays and gamma rays, whereas planets are not. If the sun is a typical star, then other stars must also be strong sources of x-rays and gamma rays. A strong detection of x-ray or gamma ray emission from any luminous point should therefore be taken as an indication that it could be a star. To the author’s knowledge, to date this method has not been used to differentiate between stars and planets.
Simple physics tells us that a star with a mass 60 times the sun should have a volume about 60 times the sun. Nevertheless, astronomers believe that the diameters of some of the giants are hundreds of times larger than the sun. This means that the volumes of some of the giants are millions of times larger than the sun; a huge jump in scale! The densities that have been attributed to these stars are similarly unreasonable. For example, some astronomers claim that Betelgeuse has a diameter 600 times greater than that of the sun1, while some others claim the diameter is 1500 times the sun2. An object with a diameter 600 times the sun means that its volume is 216,000,000 times larger than the sun. Notwithstanding, astronomers calculating the mass of Betelgeuse, by looking at its movement claim that its mass is only 20 times1 the mass of the sun2. Such a large volume with such a mass gave astronomers the idea that the average density3 of Betelgeuse is 0.000,000,1309 g/cm3. This means that the average density of Betelgeuse is 9,874 times less than the density of the earth’s atmosphere, at sea level. In other words, the space inside Betelgeuse is almost a vacuum.
Simple physics tells us that a star with a mass 60 times the Sun should have a volume less than 60 times the Sun.