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A Warhol-like look at the Whirlpool, courtesy of Spitzer

30 June 2019 Astronomy Now

Combining visible-light and multi-wavelength infrared views of the Whirlpool galaxy reveals a Warhol-like series of images highlighting the dust lanes and star-forming regions of the glorious spiral and the relatively featureless nature of the smaller companion.

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Tracing star formation rates in distant galaxies

27 March 2016 Astronomy Now

To understand the physics of the evolution and formation of galaxies it is crucial to know at what rate galaxies form stars, referred to as the star-formation rate. A group of researchers used Earth- and space-based telescopes to create a complete multi-wavelength picture of distant galaxies.

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Astronomers discover colossal ‘super spiral’ galaxies

18 March 2016 Astronomy Now

A strange new kind of galactic beast has been spotted in the cosmic wilderness. Dubbed “super spirals,” these unprecedented galaxies dwarf our own spiral galaxy, the Milky Way, and compete in size and brightness with the largest galaxies in the universe. The galaxies have long hidden in plain sight by mimicking the appearance of typical spirals.

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Hubble team breaks cosmic distance record

4 March 2016 Astronomy Now

By pushing the NASA/ESA Hubble Space Telescope to its limits, astronomers have shattered the cosmic distance record by measuring the distance to the most remote galaxy ever seen in the universe. The galaxy, named GN-z11, has a redshift of 11.1, which corresponds to 400 million years after the Big Bang when the universe was only three percent of its current age.

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ATLASGAL survey of southern Milky Way completed

24 February 2016 Astronomy Now

A spectacular new image of the Milky Way has been released to mark the completion of the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL). The APEX telescope in Chile has mapped the full area of the galactic plane visible from the Southern Hemisphere for the first time at submillimetre wavelengths — between infrared light and radio waves.

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Magnified image of the faintest galaxy from the early universe

5 December 2015 Astronomy Now

Astronomers harnessing the combined power of NASA’s Hubble and Spitzer space telescopes have found the faintest object ever seen in the early universe. It existed about 400 million years after the big bang, 13.8 billion years ago. The new object is comparable in size to the Large Magellanic Cloud (LMC), a diminutive satellite galaxy of our Milky Way.

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The birth of monsters: VISTA pinpoints earliest giant galaxies

18 November 2015 Astronomy Now

ESO’s VISTA survey telescope has spied a horde of previously hidden massive galaxies that existed when the universe was in its infancy. By discovering and studying more of these galaxies than ever before, astronomers have, for the first time, found out exactly when such monster galaxies first appeared.