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galaxies

Illustration of our galaxy, the Milky Way seen obliquely, with the arms and the central bar in their approximate known locations. There are four major arms and one arm fragment (Orion-Cygnus or Local) where the Sun is found. In the annotated version of this image, the yellow dot indicates the position of the Solar System about 25000 ly from the galactic core. The Norma and Outer arms are in fact the same, but the two names refer to different parts of it. The same is true of the so-called 3kpc (3 kilo-parsec) arm, which further out becomes the Perseus arm.

Space

Astronomers may have spotted a new spiral arm of the Milky Way galaxy

Researchers have found a colossal filament of gas called Cattail at the edge of the galaxy – it could be a new spiral arm of the Milky Way, but we have no clue how it formed

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We finally know when the first stars in the universe switched on

Space

We finally know when the first stars in the universe switched on

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galactic filament

Space

Enormous strands of galaxies in the cosmic web appear to be spinning

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spiral galaxy

Space

Dark matter is slowing down the slab of stars at our galaxy’s centre

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Wind from supermassive black holes may help small galaxies thrive

Space

Wind from supermassive black holes may help small galaxies thrive

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Infrared view of the centre of the Milky Way

Space

The building blocks for life might exist at the edge of the galaxy

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Cosmic smash-ups may push huge black holes away from their homes

Space

Cosmic smash-ups may push huge black holes away from their homes

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stars

Space

Star cluster lurking in the shadows may help explain galactic mystery

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Young galaxies grow up faster than astronomers previously thought

Space

Young galaxies grow up faster than astronomers previously thought

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Rare images show role of collisions in galactic evolution

Space

Rare images show role of collisions in galactic evolution

These six rare and exquisite images of galactic evolution were taken by the Hubble Space Telescope. They show what happens when galaxies collide and merge

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Space

Most distant quasar may help us solve how enormous black holes form

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Space

How every galaxy comes from quantum fluctuations billions of years ago

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Space

The Milky Way's black hole burped out two colossal X-ray bubbles

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Space

How to help discover new galaxies without leaving your home

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