Various astronomy news

FluffyFreak
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Re: Various astronomy news

Post by FluffyFreak » Thu Nov 15, 2018 10:46 am

https://arstechnica.com/science/2018/11 ... e-company/

Barnards Star appears to have more planets! A Super Earth orbiting in 233 days at the edge of the "Snow line", and possibly a Neptune sized object within the equivalent orbit of Jupiter. More signals also found but very faint which might indicate more planets.

impaktor
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Re: Various astronomy news

Post by impaktor » Wed Dec 12, 2018 1:28 pm

https://tile.loc.gov/image-services/iii ... efault.jpg
- A hand drawn diagram from Carl Sagan representing all of space and time. The X axis represents time, going into the future and into the past and the Y axis represents scale, from the size of the electron to the distances between galaxies. It marks the relatively small "realm of direct human experience" and the much larger "realm of quantum physics" and "realm of special relativity."
src

FluffyFreak
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Re: Various astronomy news

Post by FluffyFreak » Sat Jan 19, 2019 3:15 pm

"The Earth has been experiencing more frequent asteroid strikes"
https://arstechnica.com/science/2019/01 ... comments=1

Bonus short story called "Sad Kapteyn": https://ph.qmul.ac.uk/sad-kapteyn

Speaking of Kapteyn's Star, it passed us by within 7lyrs about ~10,800 years ago, and I'm certain that we don't account for stars proper motion over time when they were imported.

impaktor
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Re: Various astronomy news

Post by impaktor » Mon Jan 21, 2019 6:52 pm

Good short story.

I can live with present day star positions. Feels like an added headache to take +1200 year movements into account.

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