Category Astronomy/Space

Earth’s Atmosphere may be source of some Lunar Water

The image shows the distribution of surface ice at the moon’s south pole (left) and north pole (right), detected by NASA’s Moon Mineralogy Mapper instrument in 2009. Blue represents the ice locations, and the gray scale corresponds to surface temperature. Photo courtesy of NASA

Hydrogen and oxygen ions escaping from Earth’s upper atmosphere and combining on the moon could be one of the sources of the known lunar water and ice, according to new research by University of Alaska Fairbanks Geophysical Institute scientists.

The work led by UAF Geophysical Institute associate research professor Gunther Kletetschka adds to a growing body of research about water at the moon’s north and south poles.

Finding water is key to NASA’s Artemis project, the planned long-term human presence o...

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Supernova Reveals Secrets to Astronomers

This schematic of Supernova 2014C shows the various ejecta and winds (red and purple) given off by the exploding star (left, yellow). The common-envelope disk (blue) surrounds both stars, the one exploding as a supernova and its binary partner (not shown). The boundary layer around the common-envelope disk is the source of the hydrogen the team detected. (credit: B. Thomas et al./UT Austin)  

An international group of astronomers led by Benjamin Thomas of The University of Texas at Austin has used observations from the Hobby-Eberly Telescope (HET) at the university’s McDonald Observatory to unlock a puzzling mystery about a stellar explosion discovered several years ago and evolving even now...

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Classifying Exoplanet Atmospheres opens new field of study

Artist’s conceptual image of the 25 exoplanets examined in this study. (Credit: ESA/Hubble, N. Bartmann) 

An international team of researchers examined data for 25 exoplanets and found some links among the properties of the atmospheres, including the thermal profiles and chemical abundances in them. This marks the first time exoplanet atmospheres have been studied as populations, rather than individually. These findings will help establish a generalized theory of planet formation which will improve our understanding of all planets, including the Earth.

Today there are more than 3000 confirmed exoplanets, planets orbiting stars other than the Sun. Because they are far away from Earth, it is difficult to study them in detail...

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Scientists find Elusive Gas from Post-Starburst Galaxies Hiding in Plain Sight

Credit: ALMA (ESO/NAOJ/NRAO)/S. Dagnello (NRAO/AUI/NSF)

Post-starburst galaxies were previously thought to scatter all of their gas and dust — the fuel required for creating new stars — in violent bursts of energy, and with extraordinary speed. Now, new data from the Atacama Large Millimeter/submillimeter Array (ALMA) reveals that these galaxies don’t scatter all of their star-forming fuel after all. Instead, after their supposed end, these dormant galaxies hold onto and compress large amounts of highly-concentrated, turbulent gas. But contrary to expectation, they’re not using it to form stars.

In most galaxies, scientists expect gas to be distributed in a way similar to starlight. But for post-starburst galaxies, or PSBs, this isn’t the case...

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