Galaxies are often surrounded by a halo of hydrogen gas. Over time a galaxy can lose this halo, which streams off into the intergalactic medium. As a result, there can be clouds of hydrogen among the clusters of galaxies ...
Astronomy
Jan 13, 2023
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35
Some of the largest and most sophisticated telescopes ever made are under construction at the Simons Observatory in Northern Chile. They are designed to measure cosmic microwave background—electromagnetic radiation left ...
Astronomy
Dec 2, 2022
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239
In 1919 astronomers Arthur Eddington and Andrew Crommelin captured photographic images of a total solar eclipse. The sun was in the constellation Taurus at the time, and a handful of its stars could be seen in the photographs. ...
Astronomy
Sep 15, 2022
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59
Astronomers have discovered thousands of exoplanets in recent years. Most have them have been discovered by the transit method, where an optical telescope measures the brightness of a star over time. If the star dips very ...
Astronomy
Aug 17, 2022
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56
Using multiple radio telescopes across the world, a team of astronomers from the Cosmic Dawn Center, Copenhagen, have discovered several galaxies in the early universe that, due to massive amounts of dust, were hidden from ...
Astronomy
Jul 11, 2022
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1479
From afar, the Sun appears blank and featureless in visible light. But through a solar telescope in different wavelength, it is revealed to be much, much more.
Astronomy
Jun 16, 2022
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153
As a result of achieving high imaging dynamic range, a team of astronomers in Japan has discovered for the first time a faint radio emission covering a giant galaxy with an energetic black hole at its center. The radio emission ...
Astronomy
Jun 3, 2022
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798
If a person is lost in the wilderness, they have two options. They can search for civilization, or they could make themselves easy to spot by building a fire or writing HELP in big letters. For scientists interested in the ...
Space Exploration
Apr 29, 2022
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307
This finely detailed image shows the heart of NGC 1097, a barred spiral galaxy that lies about 48 million light-years from Earth in the constellation Fornax. This picture reveals the intricacy of the web of stars and dust ...
Astronomy
Mar 22, 2022
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131
The field of extrasolar planet studies is undergoing a seismic shift. To date, 4,940 exoplanets have been confirmed in 3,711 planetary systems, with another 8,709 candidates awaiting confirmation. With so many planets available ...
Astronomy
Mar 21, 2022
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