Tue, May 30, 2017 | updated 12:59 PM IST

Our galaxy's 'halo' spinning in same way as its disk

Updated: Jul 26, 2016 08:02 IST      
Our galaxy's 'halo' spinning in same way as its disk

Washington D.C, Jul 26 (ANI): Milky Way's halo is spinning and that too just like its disk, which contains our stars, planets, gas and dust, according to a team of astronomers.

The study from the University of Michigan's College of Literature, Science, and the Arts (LSA) sheds light on how individual atoms have assembled into stars, planets, and galaxies like our own, and what the future holds for these galaxies.

"This flies in the face of expectations," said Edmund Hodges-Kluck, assistant research scientist. "People just assumed that the disk of the Milky Way spins while this enormous reservoir of hot gas is stationary - but that is wrong. This hot gas reservoir is rotating as well, just not quite as fast as the disk."

The study focuses on our galaxy's hot gaseous halo, which is several times larger than the Milky Way disk and composed of ionized plasma.

Because motion produces a shift in the wavelength of light, the team measured such shifts around the sky using lines of very hot oxygen. They found that the galaxy's halo spins in the same direction as the disk of the Milky Way and at a similar speed - about 400,000 mph for the halo versus 540,000 mph for the disk.

"The rotation of the hot halo is an incredible clue to how the Milky Way formed," said Hodges-Kluck. "It tells us that this hot atmosphere is the original source of a lot of the matter in the disk."

"Now that we know about the rotation, theorists will begin to use this to learn how our Milky Way galaxy formed and its eventual destiny," noted Joel Bregman, adding: "We can use this discovery to learn so much more - the rotation of this hot halo will be a big topic of future X-ray spectrographs."

The study appears in the Astrophysical Journal. (ANI)

Your vision may keep maturing until early 40s: Study

Updated: May 30, 2017 12:45 IST     

Washington D.C. [USA], May 30 (ANI): Good news! A study finds that the visual cortex, the human brain's vision-processing centre that was previously thought to mature and stabilise in the first few years of life, actually continues to develop until late 30s or early 40s.

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NASA to reveal details on its first mission to touch sun

Updated: May 29, 2017 10:49 IST     

Washington D.C. [USA], May 29 (ANI): NASA is expected to announce new details on its first mission to fly directly into our sun's atmosphere on May 31.

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Researchers break down plastic waste under mild conditions

Updated: May 29, 2017 07:38 IST     

Washington D.C. [USA], May 28 (ANI): Japanese researchers have developed a highly efficient catalyst for breaking resistant chemical bonds, paving the way for easier recycling of plastic waste.

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Ocean warming impacts marine species' distribution

Updated: May 27, 2017 10:54 IST     

Washington D.C.[USA], May 27 (ANI): Ocean temperature continues to play a major role in where commercially and recreationally important species will find suitable habitat, suggests a study.

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Here's how hand amputation, reattachment affect brain

Updated: May 26, 2017 08:20 IST     

Washington D.C. [USA], May 26 (ANI): When a person loses a hand to amputation, nerves that control sensation and movement are severed, causing dramatic changes in areas of the brain that controlled these functions. As a result, areas of the brain devoted to the missing hand take on other functions.

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Soon, toy cars that'll help get kids with disabilities moving

Updated: May 26, 2017 08:19 IST     

Washington D.C. [USA], May 26 (ANI): Two new modified toy car designs have been developed for children with disabilities in an effort to encourage them to further explore, play, and engage in physical and social activities.

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Being 'cruel to be kind' really works!

Updated: May 25, 2017 07:29 IST     

Washington D.C. [USA], May 25 (ANI): Can making people feel bad really help them? Yes, according to a recent study.

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DNA may have only modest impact on sexual assault arrests

Updated: May 24, 2017 19:06 IST     

Washington D.C. [USA], May 24 (ANI): Most arrests in sexual assault cases occur before crime laboratory results are available, a new study found, suggesting that DNA testing may influence arrests in just a small number of cases.

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Your eyes can reveal if you have the post-disaster blues

Updated: May 24, 2017 16:01 IST     

Washington D.C. [USA], May 24 (ANI): Turns out, your eyes really are the windows to your soul as a recent study has found that depression risk following a natural disaster can be predicted via pupil dilation.

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Size of whale has evolved in the recent past!

Updated: May 24, 2017 11:03 IST     

New Delhi [India], May 7 (ANI): Interestingly, blue whales, the largest vertebrate animal that ever lived, have recently evolved into giants.

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Washington D.C. [USA], May 7 (ANI): A team of researchers discovered that deep portions of earth's mantle might be as hot as it was more than 2.5 billion years ago.

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Death by Kissing Bugs more common than thought: Study

Updated: May 22, 2017 13:26 IST     

New York [USA], May 22 (ANI): Kissing Bugs, who like to bite humans around their lips and faces, as they sleep, are more dangerous than you have ever thought of.

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Now, deaf-blind can 'watch' television with this technology

Updated: May 21, 2017 14:15 IST     

Washington D.C. [USA], May 21 (ANI): In a first, researchers have developed a new technology that types Braille or subtitles of television channels in real time and helps deaf-blind people "watch" television without intermediaries.

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Planting trees cannot replace cutting CO2 emissions!

Updated: May 18, 2017 17:15 IST     

New Delhi [INDIA], May 18 (ANI): According to a new study, growing plants and then storing CO2, taken up from the atmosphere, is no viable option to counteract unmitigated emissions from fossil fuel burning.

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Washington D.C. [USA], May 17 (ANI): Large families and strong social ties may help female rhesus macaques live longer, by reducing their chances of dying by 2.3 percent in one year, reveals a new study.

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Turns out, 'drunk you' not that different from 'sober you'

Updated: May 16, 2017 07:21 IST     

Washington D.C. [USA], May 16 (ANI): Your personality may change when you drink, but less than you think, according to a recent study.

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Researchers find ways to make solar energy affordable

Updated: May 14, 2017 21:20 IST     

Washington D.C. [USA], May 14 (ANI): In a recent study, researchers used data science to determine and predict the effects of exposure to weather and other conditions on materials in solar panels.

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Washington D.C. [USA], May 14 (ANI): Just like students choose their flatmates, Briton researchers have found that males of great tit birds are quiet selective when it comes to neighbourhood and opt to nest together with like-minded neighbours to improve their chances of survival.

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Washington D.C. [USA], May 13 (ANI): A group of international scientists studying China's Yellow River has come up with an analytic formula that could help officials better predict and prevent its all-too-frequent floods, which threaten as many as 80 million people.

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'Winged' snakes once slithered the Earth

Updated: May 13, 2017 12:54 IST     

Washington D.C. [USA], May 13 (ANI): A mysterious 5-million-year-old "winged serpent" has finally been identified as a new species of ancient snakes.

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