Category Astronomy/Space

Retreating Snow Line reveals Organic Molecules around Young Star

The distribution of dust is shown in orange and the distribution of methanol, an organic molecule, is shown in blue.
Credit: ALMA (ESO/NAOJ/NRAO), Lee et al. V883Ori

Astronomers using ALMA have detected various complex organic molecules around the young star V883 Ori. A sudden outburst from this star is releasing molecules from the icy compounds in the planet forming disk. The chemical composition of the disk is similar to that of comets in the modern Solar System. Sensitive ALMA observations enable astronomers to reconstruct the evolution of organic molecules from the birth of the Solar System to the objects we see today.

The research team led by Jeong-Eun Lee (Kyung Hee University, Korea) used the Atacama Large Millimeter/submillimeter Array (ALMA) to detect complex organic molec...

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Simulating Meteorite impacts in the a Lab

Scanning electron microscopy image of the micro-structure of albite prior to the rapid compression experiments. The image spans about 0.036 millimetres. Credit: Stony Brook University, Lars Ehm

Scientists monitor the response of feldspar minerals to rapid compression. A US-German research team has simulated meteorite impacts in the lab and followed the resulting structural changes in two feldspar minerals with X-rays as they happened. The results of the experiments at DESY and at Argonne National Laboratory in the US show that structural changes can occur at very different pressures, depending on the compression rate...

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Detailed Maps of Thousands of Nearby Galaxies

The MaNGA data set will eventually include more than 10,000 nearby galaxies, and the survey is already more than half way toward that goal.
Credit: SDSS/MaNGA collaboration

The latest data release from the Sloan Digital Sky Survey (SDSS) includes observations revealing the internal structure and composition of nearly 5,000 nearby galaxies observed during the first three years of a program called Mapping Nearby Galaxies at Apache Point Observatory (MaNGA).

MaNGA uses a technique called resolved spectroscopy to study galaxies in much greater detail than previous surveys. Spectroscopy is a powerful tool for astronomers, yielding a wealth of information by measuring how much light an object emits at different wavelengths...

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Mars Rover Curiosity makes 1st Gravity-Measuring Traverse on the Red Planet

In a selfie taken in mid-January 2019, Mars rover Curiosity prepares to enter a new, clay-mineral-rich unit on its traverse up Mount Sharp in Gale Crater. Mission scientists are anxious to see what a new gravity-measuring technique will reveal about the mountain and Gale Crater’s history.
Credit: NASA/JPL-Caltech/MSSS

A clever use of non-science engineering data from NASA’s Mars rover Curiosity has let a team of researchers, including an Arizona State University graduate student, measure the density of rock layers in 96-mile-wide Gale Crater. The findings, to be published February 1, 2019, in the journal Science, show that the layers are more porous than scientists had suspected...

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