by APOD Robot » Tue Dec 20, 2022 5:07 am
Thor's Helmet
Explanation: Thor not only has
his own day (Thursday), but a helmet in the heavens. Popularly called Thor's Helmet,
NGC 2359 is a hat-shaped cosmic cloud with wing-like appendages. Heroically sized even for a
Norse god, Thor's Helmet is about 30 light-years across. In fact, the cosmic head-covering is more like
an interstellar bubble, blown with a fast wind from the bright, massive star near the bubble's center. Known as a
Wolf-Rayet star, the central star is an extremely
hot giant thought to be in a brief, pre-
supernova stage of evolution. NGC 2359
is located about 15,000 light-years away toward the constellation of the
Great Overdog. This
remarkably sharp image is a mixed cocktail of data from
narrowband filters, capturing not only
natural looking stars but details of
the nebula's filamentary structures. The
star in the center of Thor's Helmet is expected to
explode in a spectacular
supernova sometime within the next few thousand years.
[url=https://apod.nasa.gov/apod/ap221220.html] [img]https://apod.nasa.gov/apod/calendar/S_221220.jpg[/img] [size=150]Thor's Helmet[/size][/url]
[b] Explanation: [/b] Thor not only has [url=https://en.wikipedia.org/wiki/Thursday#Thor's_day]his own day[/url] (Thursday), but a helmet in the heavens. Popularly called Thor's Helmet, [url=https://en.wikipedia.org/wiki/NGC_2359]NGC 2359[/url] is a hat-shaped cosmic cloud with wing-like appendages. Heroically sized even for a [url=https://en.wikipedia.org/wiki/Thor]Norse god[/url], Thor's Helmet is about 30 light-years across. In fact, the cosmic head-covering is more like [url=https://apod.nasa.gov/apod/ap180419.html]an interstellar bubble[/url], blown with a fast wind from the bright, massive star near the bubble's center. Known as a [url=https://astrobiology.nasa.gov/news/a-wolf-rayet-bubble-and-the-early-solar-system/]Wolf-Rayet star[/url], the central star is an extremely [url=https://apod.nasa.gov/apod/ap200308.html]hot giant[/url] thought to be in a brief, pre-[url=https://apod.nasa.gov/apod/ap050910.html]supernova[/url] stage of evolution. NGC 2359 [url=https://apod.nasa.gov/apod/ap100319.html]is located[/url] about 15,000 light-years away toward the constellation of the [url=https://webhome.phy.duke.edu/~hsg/134/poems/frost-canis-major.txt]Great Overdog[/url]. This [url=https://www.instagram.com/p/CltbBCPs6Pq/]remarkably sharp image[/url] is a mixed cocktail of data from [url=https://astrobackyard.com/narrowband-imaging/]narrowband filters[/url], capturing not only [url=https://images-na.ssl-images-amazon.com/images/I/81Nf3-uFj0L.__AC_SY445_SX342_QL70_FMwebp_.jpg]natural looking[/url] stars but details of [url=https://iopscience.iop.org/1538-3881/118/2/948]the nebula's[/url] filamentary structures. The [url=https://en.wikipedia.org/wiki/WR_7]star in the center[/url] of Thor's Helmet is expected to [url=https://youtu.be/i_PCaRn2xoE]explode[/url] in a spectacular [url=https://en.wikipedia.org/wiki/Wolf%E2%80%93Rayet_star#Supernovae]supernova sometime[/url] within the next few thousand years.
[table][tr][td=left][url=https://asterisk.apod.com/discuss_apod.php?date=221219][b]<< Previous APOD[/b][/url][/td] [td=center][url=https://asterisk.apod.com/view_retro.php?date=1220][b]This Day in APOD[/b][/url][/td] [td=right][url=https://asterisk.apod.com/discuss_apod.php?date=221221][b]Next APOD >>[/b][/url][/td][/tr][/table]