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Originally posted by stereologist
reply to post by GoldenFleece
No one has said that this is the case except you?
Why are you trying to look bad in front of everyone?
Originally posted by stereologist
reply to post by GoldenFleece
In 1985 the objects were found to be outside of the solar system. Most of the objects were a new type of galaxy.
So now you're trying to deny that you claimed the "mystery heavenly body" in the Washington Post article was a "new type of galaxy?"
So again I ask, do you actually expect anyone to believe that IRAS astronomers somehow confused ONE dark planet or brown dwarf wandering in our solar system with a distant galaxy that could contain 500 billion stars?
Originally posted by Phage
reply to post by bekod
The WISE and NEOWISE missions were not launched to look for either planet, our taxes spent on those projects were to learn a lot more about our universe and to look for objects which may pose a danger to Earth (NEOs). Money well spent. If, in the process, one of those planets is found...cool.
Get what right? These are hypothetical planets. Either one (possibly both) may exist but there is scant evidence.
Getting WISE About Nemesis
Summary: Is our Sun part of a binary star system? An unseen companion star, nicknamed “Nemesis,” may be sending comets towards Earth. If Nemesis exists, NASA’s new WISE telescope should be able to spot it.
NASA’s newest telescope, the Wide-field Infrared Survey Explorer (WISE), may be able to answer the question about Nemesis once and for all.
Finding Dwarfs in the Dark
WISE looks at our universe in the infrared part of the spectrum. Like the Spitzer space telescope, WISE is hunting for heat. The difference is that WISE has a much wider field of view, and so is able to scan a greater portion of the sky for distant objects.
WISE began scanning the sky on January 14, and NASA recently released the mission’s first images. The mission will map the entire sky until October, when the spacecraft’s coolant runs out.
Part of the WISE mission is to search for brown dwarfs, and NASA expects it could find one thousand of the dim stellar objects within 25 light years of our solar system.
Davy Kirkpatrick at NASA’s Infrared Processing and Analysis Center at Caltech found nothing when he searched for Nemesis using data from the Two Micron All Sky Survey (2MASS). Now Kirkpatrick is part of the WISE science team, ready to search again for any signs of a companion to our Sun.
Kirkpatrick doesn’t think Nemesis will be the red dwarf star with an enormous orbit described by Muller. In his view, Matese’s description of Nemesis as a low mass object closer to home is more plausible.
“I think the possibility that the Sun could harbor a companion of another sort is not a crazy idea,” said Kirkpatrick. “There might be a distant object in a more stable, more circular orbit that has gone unnoticed so far.”
Ned Wright, professor of astronomy and physics at UCLA and the principal investigator for the WISE mission, said that WISE will easily see an object with a mass a few times that of Jupiter and located 25,000 AU away, as suggested by Matese.
Originally posted by stereologist
reply to post by Xagathorn
The name wasn't changed Nemesis is not Tyche. Tyche is not Nemesis. They are separate objects with very different properties based on completely separate lines of thought.
To distinguish this object from the malevolent "Nemesis," astronomers chose the name of Nemesis's benevolent sister in Greek mythology, "Tyche."
All it says is there's some kind of "mystery heavenly body" +/- the size of Jupiter that's 50 billion miles from Earth (as of 1983.)
Now you seem to think a "galaxy" fits that description and have repeatedly said so, even though it makes absolutely no sense how a "galaxy" could be the size of Jupiter and part of our solar system.
OTOH, I think an unidentified object that's found by IRAS is much more likely to be a brown dwarf, since they're so difficult to see with conventional telescopes. Now why does that bother you? Isn't that why infrared telescopes like IRAS and WISE are launched in the first place?
I'm sure you wish that article was never written so you wouldn't have to look so foolish trying to convince everyone that a "galaxy" could be discovered in our solar system (which is kinda like saying North America is located in Hoboken), but I think it's important for everyone to understand exactly what you're claiming and realize what kind of "expertise" you possess!
One of the primary reasons for the launch of WISE wasn't to confirm the existence of Nemesis and locate brown dwarfs?
"We are now calling the hypothetical brown dwarf Tyche instead, after the benevolent counterpart to Nemesis," said Kirkpatrick.
John Matese, Emeritus Professor of Physics at the University of Louisiana at Lafayette, suspects Nemesis exists for another reason. The comets in the inner solar system seem to mostly come from the same region of the Oort Cloud, and Matese thinks the gravitational influence of a solar companion is disrupting that part of the cloud, scattering comets in its wake. His calculations suggest Nemesis is between 3 to 5 times the mass of Jupiter, rather than the 13 Jupiter masses or greater that some scientists think is a necessary quality of a brown dwarf. Even at this smaller mass, however, many astronomers would still classify it as a low mass star rather than a planet, since the circumstances of birth for stars and planets differ.
The Oort Cloud is thought to extend about 1 light year from the Sun. Matese estimates Nemesis is 25,000 AU away (or about one-third of a light year). The next-closest known star to the Sun is Proxima Centauri, located 4.2 light years away. Then there is this
NASA's Wide-field Infrared Survey Explorer, or WISE, will uncover many "failed" stars, or brown dwarfs, in infrared light. This diagram shows a brown dwarf in relation to Earth, Jupiter, a low-mass star and the sun.
CREDIT: NASA
View full size image
A dark object may be lurking near our solar system, occasionally kicking comets in our direction.?
Nicknamed "Nemesis" or "The Death Star," this undetected object could be a red or brown dwarf star, or an even darker presence several times the mass of Jupiter.
Why do scientists think something could be hidden beyond the edge of our solar system? Originally, Nemesis was suggested as a way to explain a cycle of mass extinctions on Earth
The paleontologists David Raup and Jack Sepkoski claim that, over the last 250 million years, life on Earth has faced extinction in a 26-million-year cycle. Astronomers proposed comet impacts as a possible cause for these catastrophes.?