Look at this new radio image covered with dots, each of which is a distant galaxy! The brightest spots are galaxies that are powered by supermassive black holes and shine bright in radio light. But what makes this image special ...
Astronomy
Dec 17, 2019
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648
There's a galaxy out there without apparent stars but largely chock full of dark matter. What's that you say? A galaxy without stars? Isn't that an impossibility? Not necessarily, according to the astronomers who found it ...
Astronomy
Jan 17, 2024
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Researchers have detected a radio signal from abundant interstellar dust in MACS0416_Y1, a galaxy 13.2 billion light-years away in the constellation Eridanus. Standard models can't explain this much dust in a galaxy this ...
Astronomy
Mar 19, 2019
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125
Radio telescopes have an advantage over optical telescopes, in that radio telescopes can be used even in cloudy conditions here on Earth. That's because the longer wavelengths of radio waves can pass through clouds unhindered.
Astronomy
Jun 5, 2024
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If our eyes could see radio waves, the nearby galaxy Centaurus A (Cen A) would be one of the biggest and brightest objects in the sky, nearly 20 times the apparent size of a full moon. What we can't see when looking at the ...
Astronomy
Apr 1, 2010
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Abell 1033 is a cluster of over 350 galaxies located about 1.7 billion light-years away. Collisions between galaxies in clusters are common events, and each merger heats and shocks the nearby gas. The rapidly moving, ionized ...
Astronomy
Apr 28, 2015
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Using NASA's Chandra X-ray Observatory, an international team of astronomers has conducted deep imaging observations of a high-redshift radio galaxy known as 4C 63.20. The observational campaign has revealed an extended X-ray ...
There may be fewer pairs of supermassive black holes orbiting each other at the cores of giant galaxies than previously thought, according to a new study by astronomers who analyzed data from the National Science Foundation's ...
Astronomy
Sep 21, 2015
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An international team of astronomers led by Dutch scientists has discovered that even a weak jet stream from a low-active black hole can be a kind of leaf blower to clean parts of a galaxy. The observed black hole removes ...
Astronomy
Feb 10, 2022
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389
Astronomers have used an intense burst of radio waves originating from a nearby galaxy to inspect the halo of gas cocooning our own Milky Way galaxy. The scientists studied the way that the light of the so-called fast radio ...
Astronomy
Jan 10, 2023
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