News / Science & Technology

Telescopes Spot Colliding Galaxies

Several telescopes have teamed up to discover a rare and massive merging of two galaxies that took place when the universe was just 3 billion years old (its current age is about 14 billion years). (Photo: ESA/NASA/JPL-Caltech/UC Irvine/STScI/Keck/NRAO/SAO
Several telescopes have teamed up to discover a rare and massive merging of two galaxies that took place when the universe was just 3 billion years old (its current age is about 14 billion years). (Photo: ESA/NASA/JPL-Caltech/UC Irvine/STScI/Keck/NRAO/SAO

Related Articles

Video Moon Hit By Largest Meteoroid Impact in 8 Years

Flash was nearly 10 times as bright as anything ever seen before

Video Asteroid Sampling Mission Gets Green Light

OSIRIS-REx is expected to bring back a minimum of 60 grams of surface material from asteroid Bennu

Future Astronauts Could Print Food

According to NASA, printing food could have applications beyond space
VOA News
Astronomers have gotten a rare glimpse of two distant and ancient galaxies merging.

The galaxies, called HXMM01, are about 11 billion light years from Earth, meaning they offer a look at the universe when it was only 3 billion years old. Inside the massive formation are some 400 billion stars.

Astronomers have long wondered how galaxies grew. When the universe was three to four billion years old, it was believed to have been populated with large reddish elliptical-shaped galaxies made up of old stars. Scientists wanted to know if those galaxies built up over time or formed through collisions.

According to NASA, HXMM01 suggests that massive mergers of galaxies are responsible for giant elliptical galaxies.

"We're looking at a younger phase in the life of these galaxies -- an adolescent burst of activity that won't last very long," said Hai Fu of the University of California at Irvine, who is lead author of a new study describing the results. The study is published in the May 22 online issue of Nature.

The merging galaxies are massive star factories, creating over 2,000 stars a year, NASA said. The Milky Way gives birth to two or three stars a year by comparison.

NASA said that the merging of galaxies is fairly common, but that HXMM01 is unusual “because of the prolific amounts of gas and star formation, and the sheer size of the merger at such a distant epoch.”

HXMM01 was spotted by the Herschel space observatory, a European Space Agency with follow up studies by NASA’s Hubble Space Telescope and Spitzer Space Telescope.

Below is a NASA simulation of the collision. It shows  the merging of two massive galaxies, sped up to cover 1.5 billion years of time. The merging galaxies are split into two views: a visible-light view is on the left, in which blue shows young stars and red indicates older stars and dust. The view at right shows emission from dust, which is what infrared telescopes like the Herschel Space Observatory see. When the galaxies finally merge, the strong burst of star formation can be seen best in infrared views.


You May Like

Unpaid Kurdish Fighters Sign of Economic Woes

Sharp cuts in Kurdistan's budget by Baghdad, falling oil revenue, coping with refugees, inflated public sector have hit regional economy hard More

Koreas Exchange List of Envoys for Family Reunion Talks

Officials will discuss date, venue and number of participants for reunion; Seoul hopes to hold event late this month More

China Targets 197 in Online Speech Crackdown

Nearly 200 punished for 'spreading rumors' online in ongoing crackdown on free speech More

This forum has been closed.
Comment Sorting
Comments
     
by: Ritika from: YsxinMulEbz
June 03, 2013 12:27 PM
Mette, you are an artist of refioctlens! They are fantastic. I have a feeling that I am looking at parallel worlds.Beautiful photography and very impressive. Love it very, very much.I wish you a beautiful week and creative!!!

by: Ettore Greco
May 24, 2013 2:53 PM
Contrary to what science still believes, at the time of the Big Bang there were no atoms but only waves carrying energy through the infinite Void. If we could view the Universe from outside, It would look like an egg-shaped cloud with winds running in perpetual motion inside of It. The energy is like those winds running at maximum speed and pushing out the borders of the Universe.

The Universe continues to expand as the waves that travel at the border of the Universe have never encountered, nor will ever encounter, any interference from the Void. These waves will forever expand the Space of the Universe they create and leave behind. Wave-behavior relates to the medium in which the waves travel.

Thus, wave-behavior at the border of the Universe is different than wave-behavior within the Universe. Inside the Universe, waves change their frequencies by colliding with other energy during their travel. These waves, because of the encountered interference, continue to transform part of their original energy in other forms. Waves travel gradually releasing heat, or amounts of energy, and their original short wavelengths, in time become longer and longer as they carry less and less energy than they did when they first started to travel. These waves lose energy releasing it in form of other waves with wavelengths longer than their own.

For example, the gamma rays, over time, diminish their energy level (and their frequency) to become X rays, from X rays they will become ultraviolet and so on. The original quantum is not lost but distributed into other forms of energy through "spontaneous symmetry breaking".

Once reached an almost flat longitude (and lower critical energy level) these waves solidify into hydrogen atoms breaking up their energy in opposite elements, like the split ends of a broken hair. When the hydrogen atoms are reached by the heat of other incoming waves they fuse together to create more complex forms of energy. http://www.wavevolution.org/en/freethinking.html




by: Godwin from: Nigeria
May 24, 2013 12:00 PM
Story story...; Once upon a time... Cock and bull stories abound in every age and race. In Nigeria we are told stories of how the tortoise tricked the lion; why the lizard cannot talk, etc. In scientific economies of Europe and America we are told of how the galaxies interact and things that are done light years ago which the ordinary man has no way of verifying - the star wars. Well and good for you. But if you must know anything, what the ordinary man wants to see apart from the fables acted out at Hollywood, is the eureka solution to common diseases that are growing more scientific than the scientist.

Rather than find solution to man's problems, scientists are creating more by trying to hoodwink humanity with views of colliding comets that retrospectively happened not within verifiable time range, but out of and beyond human faculties. Haba scientists! Is this what you wish to contribute to this age? We wish to see cure for illnesses and aging; we want to find cure for depression and oppressions; we love to have a world where the most intricate of accidents will no longer be life threatening because of cure availability. Showing us a world that existed trillions of years before now does not achieve progress except trick the imagination.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Calais School Offers Another Face of Europe’s Migrant Crisisi
X
Lisa Bryant
September 02, 2015 6:19 PM
Europe is facing mounting criticism over how it’s handling its biggest migration crisis since World War II. But not all Europeans believe building walls or passing repressive policies are the answer. A school for migrants in the French port city of Calais, is opening doors and building bonds across nationalities. VOA's Lisa Bryant reports.
Video

Video Calais School Offers Another Face of Europe’s Migrant Crisis

Europe is facing mounting criticism over how it’s handling its biggest migration crisis since World War II. But not all Europeans believe building walls or passing repressive policies are the answer. A school for migrants in the French port city of Calais, is opening doors and building bonds across nationalities. VOA's Lisa Bryant reports.
Video

Video Russia-Japan Relations Cool as Putin Visits China for WWII Anniversary

Russian President Vladimir Putin is in Beijing for commemorations of the 70th anniversary of China's WWII victory over Japan. Putin is expected to visit Japan later this year, but tensions between Tokyo and Moscow over islands disputed since the war, and sanctions over Ukraine, could pour cold water on the plan. VOA's Daniel Schearf reports.
Video

Video Kurdish Fighters on IS Frontline Ready for Offensive

Finger on the trigger, the Kurdish Peshmerga soldier stared across the dust at a village taken over by Islamic State extremists. The Kurdistan’s Khazir frontline, just 45 minutes from the Islamic State stronghold of Mosul. And at this point, the militants were less than two kilometers away. VOA's Sharon Behn reports.
Video

Video Yemen ‘on Brink of Disaster’ as Medical Shortages Soar

Aid agencies warn Yemen is on the brink of humanitarian disaster – with up to half a million children facing severe malnutrition, and hospitals running out of basic medicines. There are fears Yemen's civil war could escalate as the coalition led by Saudi Arabia tries to drive back Houthi rebels, who seized control of much of the country earlier this year. Henry Ridgwell reports.
Video

Video Apps Helping Kenyan Businesses Stay Ahead of Counterfeiters

Counterfeit goods in Kenya cost the government as much as $1 billion each year in lost tax revenues. The fake goods also hurt entrepreneurs who find it hard to carve out a niche in the market and retain customers. But as Lenny Ruvaga reports from Nairobi, information technology is being used to try to beat the problem.
Video

Video Nobel Prize Winner Malala Talks to VOA

Nobel Peace Prize winner Malala Yousafzai met with VOA's Deewa service in Washington Sunday to talk about women’s rights and unveil a trailer for her new documentary. VOA's Katherine Gypson has more.
Video

Video War, Drought Threaten Iraq's Marshlands

Iraq's southern wetlands are in crisis. These areas are the spawning ground for Gulf fisheries, a resting place for migrating wildfowl, and source of livelihood for fishermen and herders. Faith Lapidus has more.
Video

Video Colombians Flee Venezuela as Border Crisis Escalates

Hundreds of Colombians have fled Venezuela since last week, amid an escalating border crisis between the two countries. Last week, Venezuelan President Nicolas Maduro ordered the closure of a key border crossing after smugglers injured three Venezuelan soldiers and a civilian. The president also ordered the deportation of Colombians who are in Venezuela illegally. Zlatica Hoke reports.
Video

Video Rebuilding New Orleans' Music Scene

Ten years after Hurricane Katrina inundated New Orleans, threatening to wash away its vibrant musical heritage along with its neighborhoods, the beat goes on. As Bronwyn Benito and Faith Lapidus report, a Musicians' Village is preserving the city's unique sound.
Video

Video In Russia, Auto Industry in Tailspin

Industry insiders say country relies too heavily on imports as inflation cuts too many consumers out of the market. Daniel Schearf has more from Moscow.
Video

Video Scientist Calls Use of Fetal Tissue in Medical Research Essential

An anti-abortion group responsible for secret recordings of workers at a women's health care organization claims the workers shown are offering baby parts for sale, a charge the organization strongly denies. While the selling of fetal tissue is against the law in the United States, abortion and the use of donated fetal tissue for medical research are both legal. VOA’s Julie Taboh reports.
Video

Video Next to Iran, Climate at Forefront of Obama Agenda

President Barack Obama this week announced new initiatives aimed at making it easier for Americans to access renewable energy sources such as solar and wind. Obama is not slowing down when it comes to pushing through climate change measures, an issue he says is the greatest threat to the country’s national security. VOA correspondent Aru Pande has more from the White House.
Video

Video Arctic Draws International Competition for Oil

A new geopolitical “Great Game” is underway in earth’s northernmost region, the Arctic, where Russia has claimed a large area for resource development and President Barack Obama recently approved Shell Oil Company’s test-drilling project in an area under U.S. control. Greg Flakus reports.
Video

Video Philippine Maritime Police: Chinese Fishermen a Threat to Country’s Security

China and the Philippines both claim maritime rights in the South China Sea.  That includes the right to fish in those waters. Jason Strother reports on how the Philippines is catching Chinese nationals it says are illegal poachers. He has the story from Palawan province.
Video

Video China's Spratly Island Building Said to Light Up the Night 'Like A City'

Southeast Asian countries claim China has illegally seized territory in the Spratly islands. It is especially a concern for a Philippine mayor who says Beijing is occupying parts of his municipality. Jason Strother reports from the capital of Palawan province, Puerto Princesa.

VOA Blogs