Galaxy of about 8 redshift and about 2,300 light-years width

This image shows the galaxy Abell2744 Y1, one of the most distant galaxy candidates known. (Credit: NASA / ESA / STScI / IAC.)
This image shows the galaxy Abell2744 Y1, one of the most distant galaxy candidates known. (Credit: NASA / ESA / STScI / IAC.)

Main Point:

Astronomers have reported the discovery of one of the most distant galaxies, dubbed Abell2744 Y1.

Published in:

Astronomy and Astrophysics Letters

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Great planet finder on a huge telescope started working

GPI's image of dust disk orbiting HR4796A. Left image shows shows normal light and right image shows only polarized light. (Credit: Processing by Marshall Perrin, Space Telescope Science Institute)
GPI’s image of dust disk orbiting HR4796A. Left image shows shows normal light and right image shows only polarized light. (Credit: Processing by Marshall Perrin, Space Telescope Science Institute)

Main Point:

The Gemini Planet Imager (GPI) – reportedly the “most powerful planet-finder” in the world – has started taking images of the planets outside of our solar system and analyzing them. Read More …

“Hypervelocity stars” have more speed than our galaxy

Top and side views of the Milky Way galaxy show the location of four of the new class of hypervelocity stars. These are sun-like stars that are moving at speeds of more than a million miles per hour relative to the galaxy: fast enough to escape its gravitational grasp. The general directions from which the stars have come are shown by the colored bands. (Graphic design by Julie Turner, Vanderbilt University. Top view courtesy of the National Aeronautics and Space Administration. Side view courtesy of the European Southern Observatory.)
Top and side views of the Milky Way galaxy show the location of four of the new class of hypervelocity stars. These are sun-like stars that are moving at speeds of more than a million miles per hour relative to the galaxy: fast enough to escape its gravitational grasp. The general directions from which the stars have come are shown by the colored bands. (Graphic design by Julie Turner, Vanderbilt University. Top view courtesy of the National Aeronautics and Space Administration. Side view courtesy of the European Southern Observatory.)

Main Point:

Scientists have found a new class of stars in universe, dubbed as “hypervelocity stars” moving with such a high speed that they are out of gravitational grip of the Milky Way galaxy. Read More …

End of Universe due to collapse is perhaps closer than we think

collapse of the universe (Credit: University of Southern Denmark)Main Point:

Scientists have noted that perhaps our universe is either very close to collapse or it has already started collapsing bringing it closer to its end.

Published in:

Journal of High Energy Physics

Study Further:

Astronomy initially showed that our universe expanded after its coming into being and they are of the opinion that after a limit of expansion, it will start to collapse but we are not sure whether this collapse will happen and if it will happen, when it will happen. Read More …

New project to remove conflict among galaxy simulations

Andromeda Galaxy with tilt shift effect (Credit: Imgur)
Andromeda Galaxy with tilt shift effect (Credit: Imgur)

Main Point:

In a new project dubbed AGORA, researchers are working to remove the discrepancies among different computer models of galaxy formation by comparing different codes against each other. Read More …

In astronomy, usually “the more we know, the more we know that we don’t know”

The galaxy 1-Zwicky18 is very similar in composition to galaxies which formed in the first billion years after the big bang (Source: NASA/Hubble)
The galaxy 1-Zwicky18 is very similar in composition to galaxies which formed in the first billion years after the big bang (Source: NASA/Hubble)

Main Points:

Astronomers have found that stars in the very beginning of universe used very little dust. This finding has enhanced the mysteriousness of the formation of very early stars. Read More …