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The Dawn of a New Era for Supernova 1987a (2017)
- jb1991 2y agoNeeds (2017) on title.
- deleted 2y ago[deleted]
- elhospitaler 2y agoThat time-lapse video is insane!
- raverbashing 2y agoThis has been one material that has taught me a lot about SN1987A (a recreation of live events of when it happened, it used to be a twitter acct but now it is archived https://bmonreal.github.io/RealTime1987A/ https://bmonreal.github.io/RealTime1987A/ )
- ucsbphysics 2y agoyes! cool to see a ben monreal mention too, he taught me intro and nuclear physics once upon a time.
- empiricus 2y agoI am wondering which visible cosmic events are actually some alien constructs.
- m463 2y agoor ... destructs
- GJim 2y agoArthur C Clarke once suggested some supernova may be industrial accidents. It's a strangely romantic idea and one that is Clarke through and through!
- tristramb 2y agoIn Alastair Reynolds' "House of Suns", the Gentian Line of spacefarers construct "stardams" around stars to prevent their supernova outbursts from harming nearby civilizations.
- sandworm101 2y agoGiven the amount of empty space out there, the amount of black between stars, it would seem more efficient to create shields around the civilizations than around the stars themselves.
- restalis 2y ago"Efficient" in the economical sense, that is. Unless, the civilization covers a very wide area (basically everywhere in there, for light years around the impending supernova) and the protection amounted for each and every civilization zone would surpass the containment circle/cylinder/sphere around the star. In such case the sensible solution becomes to just recognize the area that can not be saved (no mater what) due to its proximity to the star and the limits of walling withstanding capacity, evacuate that, and set the containment all around the future explosion as close as possible instead.
- canadianfella 2y ago[dead]
- woolcap 2y agoBrings new meaning and scale to the idea of a RUD.
- dotancohen 2y agoBridges nicely with the Asimov story of a civilization that prepares for its supernova by constructing a monument to survive it.
- yread 2y agoThis is how jwst sees it https://science.nasa.gov/missions/webb/webb-finds-evidence-for-neutron-star-at-heart-of-young-supernova-remnant/ https://science.nasa.gov/missions/webb/webb-finds-evidence-f...
- baq 2y agothe NIRCam image without markings: https://esawebb.org/images/SN1987a-1/ https://esawebb.org/images/SN1987a-1/
- Grandeculio 2y agoThe next step is to find evidence of a neutron star or black hole left behind.
- sirto 2y agoThey possibly already found a neutron star inside the remains: https://science.nasa.gov/missions/webb/webb-finds-evidence-for-neutron-star-at-heart-of-young-supernova-remnant/ https://science.nasa.gov/missions/webb/webb-finds-evidence-f...
- xeyownt 2y agoThis is clearly one supernova to rule them all!
- deleted 2y ago[deleted]
- pohl 2y agoWhat are some thoughts about why we're basically seeing a flat ring, rather than a spherical shell of a cloud in all directions?
- readyplayernull 2y agoHigh speed rotation in an axis?
- ASalazarMX 2y agoAccording to this article, this explosion is hourglass-shaped rather than spherical, due to the previous behavior of the star. https://www.astronomy.com/science/why-does-supernova-1987a-look-like-a-ring/ https://www.astronomy.com/science/why-does-supernova-1987a-l...
- jdhwosnhw 2y agoThe column mass (ie, the spatial density multiplied by the length of the observer’s line of sight through the material) is highest at the limbs when looking at a gaseous shell. So shells like this look like rings from all angles. A related effect called limb darkening is the edges of the sun always look less bright, independent of viewing angle
- alfiopuglisi 2y agoThe ring is not a product of the supernova. It's pre-existing material, that is being energized by impact of the supernova ejecta (it took a few months for it to start brightening). There are actually three rings, a smaller one around the previous star's equator, and two larger ones above and below. The hourglass-like figure is actually quite common, produced by the star rotaton.