Category Astronomy/Space

‘Bathtub rings’ around Titan’s Lakes might be made of Alien Crystals

Artist’s view of Saturn from Titan (stock image, elements furnished by NASA).
Credit: © Vadimsadovski / Adobe Stock

The frigid lakeshores of Saturn’s moon Titan might be encrusted with strange, unearthly minerals, according to new research being presented here. Scientists re-creating Titan-esque conditions in their laboratory have discovered new compounds and minerals not found on Earth, including a co-crystal made of solid acetylene and butane.

Acetylene and butane exist on Earth as gases and are commonly used for welding and camp stove fuel. On Titan, with its extremely cold temperatures, acetylene and butane are solid and combine to form crystals, the new research found.

The new mineral might be responsible for the bathtub rings that are suspected to exist around Titan’s hyd...

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Astrophysicist announces her Discovery that could Rewrite Story of how Galaxies Die

This artist conception depicts an energetic quasar that has cleared the center of the galaxy of gas and dust, and the winds are now propagating it to the outskirts. Soon, there will be no gas and dust left, and only a luminous blue quasar will remain. Credit: Michelle Vigeant.

A breakthrough finding overturns assumptions about the maturation of galaxies and may represent a phase of every galaxy’s life cycle that was unknown until now. At the annual meeting of the American Astronomical Society in St. Louis, Missouri, Allison Kirkpatrick, assistant professor of physics and astronomy at the University of Kansas, will announce her discovery of “cold quasars” – galaxies featuring an abundance of cold gas that still can produce new stars despite having a quasar at the center.
Her news brie...

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Astronomers see ‘Warm’ Glow of Uranus’s Rings

Composite image of Uranus’s atmosphere and rings at radio wavelengths, taken with the ALMA array in December 2017. The image shows thermal emission, or heat, from the rings of Uranus for the first time, enabling scientists to determine their temperature: a frigid 77 Kelvin (-320 F). Dark bands in Uranus’s atmosphere at these wavelengths show the presence of molecules that absorb radio waves, in particular hydrogen sulfide gas. Bright regions like the north polar spot (yellow spot at right, because Uranus is tipped on its side) contain very few of these molecules. (UC Berkeley image by Edward Molter and Imke de Pater)

First heat images of the rings enable scientists to determine their temperature...

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Northern Lights’ ‘Social Networking’ reveals true scale of Magnetic Storms

Northern lights (stock image).
Credit: © PixieMe / Adobe Stock

Magnetic disturbances caused by phenomena like the northern lights can be tracked by a ‘social network’ of ground-based instruments, according to a new study from the University of Warwick.

The researchers, led by Professor Sandra Chapman from the University’s Department of Physics, have for the first time characterised the observations from over 100 ground based magnetometers in terms of a time-varying directed network of connections. They monitored the development of geomagnetic substorms using the same mathematics used to study social networks. The magnetometers ‘befriend’ one another when they see the same signal of a propagating disturbance.

The research, published in the journal Geophysical Research Letters, o...

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