Supernovae and Galaxies Being Used to Solve Astrophysics’ Biggest Questions

Supernovae and Galaxies Being Used to Solve Astrophysics’ Biggest Questions

Two new studies are attempting to solve a couple of big puzzles in astrophysics: Is the Hubble constant actually constant? And why do galaxies have flat rotation curves? Plus, a young star’s circumstellar disk, the search for stellar-mass black holes, magnesium in the deep waters of Neptune and Uranus, and an interview with PSI scientist David Horvath regarding possibly active volcanism on Mars.

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Discovery of Twin Supernovae Could Open Up Dark Energy Experiments

Discovery of Twin Supernovae Could Open Up Dark Energy Experiments

Researchers found that among about 50 supernovae, many had nearly identical spectra, paving the way for making more accurate distance calculations. These calculations, in turn, open up the possibility of using supernovae to better search for dark energy. Plus, OSIRIS-REx, Voyager I, planetary formation, and volcanoes on Mars.

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End-Permian Extinction Lasted Ten Times Longer on Land Than Water

End-Permian Extinction Lasted Ten Times Longer on Land Than Water

The biggest mass extinction event on Earth occurred at the end of the Permian period, resulting in the extinction of 95% of marine life and 80% of terrestrial life. Now, scientists have found that the terrestrial portion of the event lasted nearly ten times as long as the ocean version. Plus, a spaghettified star, the search for Moon Trees, all about Mars, and new works on dark matter and dark energy.

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