AstroBlog becomes Planetary Blog

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A new blog named "Planetary Blog" has replaced the old AstroBlog as of 2014 Sept 1.
All AstroBlog posts before that date may still be found at the old blog site:


We are working on transferring the old blog entries to the new one.
Thanks for your patience.


http://www.fossweb.com/astroblog

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Stellar remains of famed 1987 supernova found at last

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Planets around dead stars offer glimpse of the Solar System’s future—after the Sun swallows us up

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https://www.science.org/content/article/planets-around-dead-stars-offer-glimpse-solar-system-s-future-after-sun-swallows-us By JONATHAN O’CALLAGHAN , Science.  Excerpt: In about 5 billion years the Sun will balloon up into a red giant, consuming Mercury, probably Venus, and maybe even Earth. But even if the outer planets avoid being swallowed up, they might eventually get pulled in or ejected from the Solar System. A new discovery suggests they can survive intact. Using NASA’s JWST space telescope, astronomers have for the first time directly imaged planets on Solar System–like orbits around white dwarfs, the dead stars left after Sun-like stars swell into red giants and subside. The planets follow orbits resembling those of the giant planets in the outer Solar System—big enough for them to have escaped the inferno.... For GSS A Changing Cosmos chapter 1.
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Supernova of a Generation: Brightest Exploding Star in 40 Years Spotted

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Source:   IB Times Excerpt: Astronomers from Berkeley have discovered the closest supernova, or exploded star, in 40 years in the Pinwheel Galaxy, located just 21 million light-years from Earth. ...Being the source of most of the chemical elements in the universe heavier than iron, supernovas also play an important role in the evolution of galaxies and planetary systems. They also seed the rest of space with elements such as carbon, oxygen and nitrogen, and can "nudge" gas clouds into collapsing to form new star systems. www.ibtimes.com/art/services/print.php
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