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(marine biology) benthos
The study of benthos is an important field in marine biology.
(law, biology) invasive species that is restricted under Japanese law
According to the law on specified alien species, the import of certain organisms is prohibited.
(astronomy) white dwarf
A white dwarf is a celestial body that a giant star becomes at the end of its life.
(astronomy) brown dwarf
A brown dwarf is a celestial body that has a size between a star and a planet.
(astronomy) red dwarf
Red dwarfs are the most common type of star in the universe.
the Big Dipper, the Plough
I was able to find the Big Dipper.
(astronomy) black dwarf
It is believed that black dwarfs are formed by the cooling of white dwarfs.
Synonym of 宇宙人 (uchūjin, “alien”) (life form of non-Earth origin)
Please imagine the day when aliens come to Earth.
(astronomy) Sirius, Dog Star
Sirius is the brightest star in the night sky.
circumpolar star
The circumpolar star is always visible in the north.
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