Astronomers Find Galaxy with Almost No Dark Matter

Astronomers Find Galaxy with Almost No Dark Matter

The research team, led by scientists at Yale, describes the study of a far-off galaxy called NGC 1052-DF2. That stellar sparseness means it does not look much like a typical spiral galaxy, but rather a loosely connected, ghostly blob of star-pocked gas and dust. It doesn't fit the characteristics of a spiral galaxy, which typically have dense, central regions, spiral arms, and a disk. Based on their observations, they found the mass to be what you'd expect to see from the stars alone, suggesting that the galaxy has no dark matter.

Potential explanations, which remain speculative, are that a fledgling massive galaxy billions of years ago played a role, or that a cataclysmic event within the galaxy swept out gas and dark matter, halting star formation, the release said. Astronomers think that dark matter is needed to form galaxies. Yet in this odd galaxy, the projected signatures of these exotic effects are not seen. The Hubble Space Telescope's Advanced Camera for Surveys acquired this image, which is via NASA, ESA, and P. van Dokkum, Yale.

At present, it is though, a necessity for a universe or galaxy to have dark matter for its fabrication.

Dark matter is integral to all galaxies. That's when they realized that this galaxy was very, very different from other galaxies. They are analyzing Hubble images of 23 other diffuse galaxies.

This was among those situations where exploration started with the expression "huh, that looks unusual". Dragonfly saw it as a diffuse object with some structures in it; Sloan imaged it as a collection of distinct objects. In the study, scientists measure mass by tracking the velocity of bodies that move inside the galaxy, Pieter van Dokkum, co-author of the study told Newsweek. "There is no theory that predicts these types of galaxies - how you actually go about forming one of these things is completely unknown", Merritt said. "It is essentially a translucent galaxy".

"We thought all galaxies were made up of stars, gas and dark matter mixed together, but with dark matter always dominating", Prof. The paper appears in the March 29 issue of the journal Nature.

The responses were very unexpected. From those measurements, the team calculated the galaxy's mass. And not only the galaxies, the entire fabrication of the universe is the skeleton of dark matter and everything else is stuff that has been pasted on it. In this situation, there's a marginal distinction in between the 2.

Trump targets Amazon over taxes
Supreme Court to let state and local governments collect billions of dollars in sales taxes from online retailers. President Donald Trump tweeted Thursday that Amazon was causing "tremendous loss" to the Post Office.

Renault shares surge on Nissan merger talks report
Earlier in March, Nissan was holding talks to purchase a large portion of the stake held by the French government. Nissan shares are down almost 2 percent over the past year, giving the company a valuation of 4.6 $43 billion.

GoPro's new entry-level Hero camera costs $199
It is waterproof to 30 feet and is extremely durable and ideally suitable for adventurous social sharers and travelers. GoPro is framing the new camera as the flawless addition to your adventures: easy to use, durable, and affordable.

This is highly uncommon for galaxies. He points out that the galaxy, memorably named NGC1052-DF2, is orbiting another one.

"Paradoxically, the existence of NGC1052-DF2 may falsify alternatives to dark matter", the authors conclude, noting that those alternatives include both variations of MOND and emergent gravity. It ends up that a galaxy without dark issue is inappropriate with designs that change it making use of changed gravity.

Dark matter, as the name implies, is a pretty mysterious thing. This suggests there is unseen, but substantial, mass holding stars in orbit.

NGC 1052-DF2 is missing its dark matter.

The evident concern is exactly how you wind up with a galaxy like NGC1052- DF2. Using the amount of light emitted by the galaxy produced an estimate of the total mass of stars in the galaxy that was also in the neighborhood of 10. So the enigma of NGC 1052-DF2, may not be an enigma for long.

Van Dokkum and his team plan to keep searching for similar galaxies-or just any other weird thing that challenges the current understanding of dark matter. Recently, the space scientists unveiled a certain ghostly galaxy that is very unusually transparent and is nearly the same size as the Milky Way. They likewise state that they've recognized a variety of various other galaxies that look rather comparable.

Related news:

Hot News

isis-killer-beheading-video-story-top Salem Lions Easter Egg Hunt Set for Sunday
Mar 30, 2018 - 00:41
The city's "Traditional Easter Bonnet" and "Contemporary Hat" contests will take place immediately following the egg hunt. Kelsey Winters attended the Egg-ceptional Egg Hunt for the first time with her daughter, 18-month-old Re'Ella Clark.

isis-killer-beheading-video-story-top Mets icon Rusty Staub dead at 73
Mar 30, 2018 - 00:41
He finally decided on a $100,000 bonus from the new Houston Colt.45s, who were preparing for their inaugural season in 1962. Last July, he was at Citi Field as Austin Tuozzolo, 5, threw a ceremonial first pitch before a Mets game.

isis-killer-beheading-video-story-top BCCI Banned Steve Smith and David Warner In IPL 2018
Mar 30, 2018 - 00:38
Things got worse after the ball-tampering row rocked cricket where Warner was one of the prime culprits. Like Warner, both players could yet launch appeals against their sanctions.

isis-killer-beheading-video-story-top IOS 11.3 Released: Here's the Top 5 Features
Mar 30, 2018 - 00:34
It's available over the air and it's the first ever update for Apple's smart speaker. Four new Animoji are arriving for iPhone X users: a lion, bear, skull and dragon.

isis-killer-beheading-video-story-top Malala returns to Pakistan
Mar 30, 2018 - 00:30
He said the entire world gave honour and respect to Malala and Pakistan would also give her the kind of respect she deserves. She says: "It is now actually happening and I am here" and that she will continue to campaign for the education of girls.

isis-killer-beheading-video-story-top Facebook Shares Perk Up After Social Network Tweaks Privacy Settings
Mar 30, 2018 - 00:25
The section will also enable users to access secure copies of their Facebook history more quickly, the company said. The update follows the recent controversy brewing over an alleged data breach of almost 50 million Facebook users.

isis-killer-beheading-video-story-top Iran urges Saudi Arabia to end Yemen war, engage in dialog
Mar 30, 2018 - 00:20
Yemeni forces fired seven ballistic missiles into Saudi Arabia in retaliation for the continued massacre of civilians by the Saudi-led coalition.

isis-killer-beheading-video-story-top Egypt: Sisi Hails Turnout of Masses in Presidential Elections
Mar 30, 2018 - 00:19
Other tactics have also been deployed, with some voters saying they were paid and given other incentives to cast their ballots. Sisi's only challenger and al Ghad party chief Moussa Mostafa Moussa was able to get only three per cent of vote share.

isis-killer-beheading-video-story-top The world's biggest search engine is upgrading its GIF game
Mar 29, 2018 - 02:20
But as the web evolved and mobile devices changed the way people search, the way people use Google Images has changed too. Overall, it looks like Google wants to expand its capabilities in presenting gifs within its own apps and services.

isis-killer-beheading-video-story-top Former Catalan minister Clara Ponsati hands herself in to police in Scotland
Mar 29, 2018 - 02:16
A former Catalan minister facing extradition to Spain on charges of rebellion has turned herself in to authorities in Scotland . Her lawyer Aamer Anwar said he was preparing her for a court appearance today where she intends to fight extradition.

isis-killer-beheading-video-story-top No winning ticket sold for Mega Millions drawing
Mar 29, 2018 - 02:15
Tonight, players in SC hope the decision falls in their hands, as this is the eleventh-largest sum seen in North America. The profit from all Mega Million tickets bought in Virginia goes toward K-12 public education in the Commonwealth.

isis-killer-beheading-video-story-top Huawei Porsche Design Mate RS with in-screen fingerprint sensor launched
Mar 29, 2018 - 02:14
However, Huawei have built a toggle into the settings menu of the phone that'll allow you to make it a little more inconspicuous. P20 Pro has a 6.1 inch OLED display while P20 has 5.8-inch LCD screen and Porsche Design Huawei Mate RS has 6-inch OLED screen.

isis-killer-beheading-video-story-top New Atlas Tanoak Pickup Concept Is VW's Love Letter To America
Mar 29, 2018 - 02:12
The 18-kwh battery takes up space in the center tunnel, and supplies 26 miles of all-electric driving range when fully charged. A more mainstream Atlas Cross Sport is seen as a better fit as a sportier two-row SUV for the US than the departed Touareg .

Latest Forecast: Rain And Snow Starts Wednesday Afternoon
Mar 29, 2018 - 02:09
He said: "We are about to see a significant drop in temperatures as winds veer in from a more northerly and easterly direction". Showers, or a wintry mix in some higher elevations, may threaten early Monday , otherwise it is dry into early Tuesday .

isis-killer-beheading-video-story-top Logitech Crayon and Rugged Combo 2 enhance the iPad (2018) experience
Mar 28, 2018 - 01:34
Like the case, the Crayon also has a rugged design that should survive better with the kids than the dainty Apple Pencil. Crayon does have support for tilt, though, with Logitech saying it also offers low latency and "sub-pixel precision".