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Exoplanets and their characterization the focus of STScl workshop

Spaceflight Insider
Laurel Kornfeld
May 11th, 2021
An artist’s rendering of 10 hot Jupiters, exoplanets physically similar to Jupiter that orbit very close to their parent star, studied by Dr. David Sing of the Johns Hopkins University Center for Astrophysical Sciences. Credit: NASA, ESA, and D. Sing
The various methods used over the last 25 years to discover exoplanets and the science of categorizing the many types of exoplanets that have been found was the focus of an April 19 workshop for science writers sponsored by the
Space Telescope Science Institute (
STScI virtual
symposium centering on the formation, structure, and evolution of the more than 4,000 exoplanets discovered to date. Speakers included Dr. Jessie Christiansen of ....

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Science of spin - older stars rotate faster than expected

Date Time
Science of spin – older stars rotate faster than expected
Sound waves trapped inside stars cause them to oscillate at particular frequencies. These vibrations are visible on the surface, and can be measured by astronomers using space telescopes. When a star is rotating these oscillation frequencies change slightly, making it possible to measure the star’s rotation by looking at how it’s surface changes over time. Credit: Mark Garlick / University of Birmingham
Stars spin faster than expected as they age, according to a new study – which uses asteroseismology to shed new light on this emerging theory
All stars, like the Sun, are born spinning. As they grow older, their spin slows down due to magnetic winds in a process called ‘magnetic braking’. Research published in 2016 by scientists at Carnegie Observatories delivered the first hints that stars at a similar stage of life as the Sun were spinning faster than magnetic braking theories predicte ....

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