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Science: "the strange object discovered in our galaxy, which baffles astronomers and astrophysicists"


 Science: "the strange object discovered in our galaxy, which baffles astronomers and astrophysicists"

Science: "the strange object discovered in our galaxy, which baffles astronomers and astrophysicists"
A photograph of the sky with the Wide-field Infrared Survey Explorer (WISE). Infrared light has wavelengths longer than those visible to the human eye, and evidence of the crash was found using the data in this image.

They aren't quite stars or quite planets, however one thing in between, and there could also be a lot of of them in our galaxy than antecedently thought. therefore says a replacement study printed within the astronomy Journal, that focuses on a new "enigmatic" brown dwarf, nicknamed "the accident" as a result of it had been discovered by pure chance. Brown dwarfs are objects too little to be stars and large to be thought-about planets. they're typically referred to as "failed stars". "This object defied all of our expectations," aforesaid Sir Humphrey Davy Kirkpatrick, study author and astronomer at the CA Institute of Technology (Caltech). The study says the "crash" might be between 10 and 13 billion years previous, creating it a minimum of double as old as different brown dwarfs antecedently discovered. this means that it fashioned once our galaxy was a lot of younger and had a special chemical makeup. "If so, it' seemingly that there are more of those ancient brown dwarfs lurking in our galactic neighborhood," adds Kirkpatrick.

a special brown dwarf

Science: "the strange object discovered in our galaxy, which baffles astronomers and astrophysicists"

"The accident," formally referred to as WISEA J153429.75-104303.3, was discovered by soul Dan Caselden by sheer luck, because it is not like the other brown dwarf discovered within the galaxy to date, consistent with one. National Aeronautics and Space Administration press release. As they age, brown dwarfs get cooler and their brightness changes at completely different wavelengths, very similar to hot metals change color as they cool. the article intrigued scientists, as its brightness isn't typical of that seen in other older brown dwarfs.
To scan on BBC Africa: a awfully easy guide to temperature change What happens to your brain after you quit sugar? The mishap of a South African waiter command captive in Oman Why mistakes are crucial to the advancement of science It emits faint lightweight at bound key wavelengths, suggesting that they're terribly cold, however at identical time, it's brighter elsewhere, indicating that those areas are warmer. “It' no surprise to search out such an previous brown dwarf, but it' a surprise to find one in our garden,” says Federico Marocco, a colleague of Sir Humphrey Davy Kirkpatrick and author of the study. "We expected brown dwarfs of this age to exist, we have a tendency to conjointly expected them to be implausibly rare," continues the astrophysicist, who LED the observations mistreatment the Keck and Hubble telescopes.

800,000 klick / h a lot of

mistreatment terrestrial telescopes from the WM Keck Observatory in Hawaii, the researchers tried to look at "the accident" with additional infrared radiation. however the brown dwarf was therefore weak that she was undetectable, that confirms that she is extremely cold and thus very old. The researchers believe that the speed at which it spins is any proof that it's occupied the galaxy for a protracted time, as it drags large objects that cause its gravity to accelerate. The "crash" is concerning fifty lightweight years from Earth and is spinning about 800,000 klick / h quicker than the other brown dwarf found at the same distance from our planet, consistent with the study. Another feature of the "crash," the study notes, is that it contains low levels of methane, compared to most other brown dwarfs found, that strengthens the argument that it formed. over 10 billion years ago, once the galaxy was composed nearly entirely of chemical element and helium, and lacked the carbon required to form methane. "The risk of finding one therefore getting ready to the scheme {could be|might be|can be|may be|may we have a tendency toll be} a cheerful coincidence, or it may mean that they're a lot of common than we think," concludes Marocco.