3 galaxies play gravity-giving game

Located 100 million light-years away at the constellation Piscis Austrinus (Southern Fish), the three galaxies playing for and receiving can lead to a combination of them to become a giant entity.

The new photograph of a survey camera installed on the NASA / ESA Hubble Space Telescope captures astronomers to observe the movement of gas from one galaxy to another, revealing complex interaction between them.

Picture 1 of 3 galaxies play gravity-giving game

The photo of the three galaxies NGC 7173 (middle left), NGC 7174 (right middle) and NGC 7176 (below right) of Hickson Compact Group 90 is named after astronomer Paul Hickson.He was the first to classify this small group of galaxies in the 1980s. In the ahr picture, NGC 7174 is a spirited, cleaved spiral galaxy to survive under the influence of two neighbors. it.Strong intergalactic interactions have pulled significant numbers of stars out of their galaxy.These stars are now scattered outside, forming a fragile glow in the galaxy group.(Photo: NASA, ESA and R. Sharples (University of Durham, UK))

The three galaxies photographed are NGC 7173 (middle left), NGC 7174 (middle right) and NGC 7176 (below right) of Hickson Compact Group 90 named after astronomer Paul Hickson. He was the first to classify this small group of galaxies in the 1980s. NGC 7173 and NGC 7176 are normal and quiet elliptical galaxies.It does not have much gas or dust.

In contrast, NCG 7174 is a spiraling galaxy that is cluttered to survive under the influence of its two neighbors. Strong interactions between galaxies have pulled significant numbers of stars out of their galaxies. These stars are now scattered outside, forming a fragile glow in the galaxy group.

Basically, astronomers believe that the stars in NGC 7174 will be brought back to the giant 'cosmic island' , dozens to hundreds of times larger than our Milky Way galaxy.

Update 17 December 2018