Technology Astronomers Witness Gigantic Galaxy Collision

22:52  14 november  2017
22:52  14 november  2017 Source:   Popular Mechanics

Three alternatives to the iPhone X

  Three alternatives to the iPhone X There are several Android phones that would be a good alternative to the iPhone X, starting with the Samsung Galaxy S8.  Samsung Galaxy S8

Galaxy collisions are a common occurrence in the universe. Our own Milky Way is fated to collide and merge with its neighbor, Andromeda, in about 5 billion years. Astronomers have observed several clashes involving one big galaxy and several larger ones, and they have also witnessed more major

The image shows a number of strange features the astronomers think are related to an ongoing collision of galaxy clusters. The region is called Abell 2256, and is about 800 million light-years from Earth and some 4 million light-years across.

The two ancient galaxies are 50 times as massive as our own.: Astronomers Witness Gigantic Galaxy Collision © NRAO/AUI/NSF Astronomers Witness Gigantic Galaxy Collision Galaxy collisions are the largest and most intricate choreography of matter ever performed in the universe. Billions of stars swirl together and fly apart, supermassive black holes collide and combine, and nebulas of gas collapse into thousands of new stars. It's a dance that takes billions of years to complete, and it's happening thousands of times over all across the universe.

Using the ALMA radio telescope in Chile, scientists have spotted what they believe to be the largest galaxy merger ever discovered. The two galaxies, collectively called ADFS-27, are both incredibly bright and massive, what scientists call 'superluminous starburst galaxies.' They are also ancient, situated 12.7 billion light-years away, making them among the oldest galaxies in the universe.

Here's How You Can Disable Bixby On Samsung Galaxy S8, Note 8

  Here's How You Can Disable Bixby On Samsung Galaxy S8, Note 8 Samsung launched Bixby with the Galaxy S8 in March this year to compete with the likes of Google Assistant and Apple Siri, however, it seems that the voice assistant hasn't performed at par with its competitors.Users earlier tried to tweak what the button can do and used it for functions such as turning on the camera. This workaround was nixed by Samsung later stating that reassigning the button was “exploiting a system-level behavior.

Astronomers Witness the Largest Galaxy Collision Ever Discovered. The two ancient galaxies are 50 times as massive as our own. NRAO/AUI/NSF. By Avery Thompson. Nov 13, 2017. Galaxy collisions are the largest and most intricate choreography of matter ever performed in the universe.

Astronomers from the European Space Agency’s XMM-Newton X-Ray Telescope caught a glimpse into what this future collision might look like on Wednesday. Data from galactic collisions helps scientists understand the process and can tell us how much these distant galaxies might weigh.

"Finding just one hyper-luminous starburst galaxy is remarkable in itself. Finding two of these rare galaxies in such close proximity is truly astounding," said Dominik Riechers, lead author of a new study in the Astrophysical Journal. "Considering their extreme distance from Earth and the frenetic star-forming activity inside each, it's possible we may be witnessing the most intense galaxy merger known to date."

ADFS-27 owe their incredible brightness to an earlier sideswiping collision, which triggered an intense burst of star formation. These two galaxies, each more than a dozen times the size of the Milky Way, are pumping out new stars around a thousand times as fast as our own galaxy.

Astronomers believe that the two galaxies are massive enough that one day they could form the core of a new galaxy cluster. Galaxy clusters are groups of hundreds or thousands of galaxies all revolving around a common center, in this case ADFS-27. Follow-up observations with other telescopes could confirm whether starting a galaxy cluster is in the cards for ADFS-27.

"Eventually, we hope to combine the exquisite ALMA data with future infrared observations with NASA's James Webb Space Telescope," says Riechers. "These two telescopes will form an astronomer's 'dream team' to better understand the nature of this and other such exceptionally rare, extreme systems."

Source: National Radio Astronomy Observatory

Bizarre Interstellar Asteroid Is Unlike Any Observed In Solar System .
The recently detected interstellar object that is now visiting our solar system is providing planetary scientists with their first close up view of an extrasolar asteroid.This artist’s impression shows the first interstellar asteroid: `Oumuamua. This unique object was discovered on 19 October 2017 by the Pan-STARRS 1 telescope in Hawai`i. Subsequent observations from ESO’s Very Large Telescope in Chile and other observatories around the world show that it was travelling through space for millions of years before its chance encounter with our star system.

—   Share news in the SOC. Networks

Topical videos:

This is interesting!