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What is the '炎 星／主役にする'?T Coronae Borealis

Every 80 years, starting in 1217 AD, 天文学者s have 観察するd what appears to be a new 星／主役にする 簡潔に appear in the sky for about a week before 消えるing.

While it is known as the '炎 星／主役にする' this 現象 is not really a new 星／主役にする appearing in the sky.

Instead, what we see as a new 星／主役にする is 現実に a distant 爆発 called a nova occurring about 3,000 light-years from Earth in a binary 星／主役にする system called T Coronae Borealis.

T Coronae Borealis 含む／封じ込めるs two 星／主役にするs: A 大規模な red 巨大（な） 星／主役にする about 75 times the size of our sun, and a 最高の-dense white dwarf not much larger than Earth.

As these 星／主役にするs 軌道, the 激しい white dwarf siphons hydrogen gas from its partner and will slowly 消費する the larger 星／主役にする over millions of years.

But, as the hydrogen 落ちるs into the white dwarf, some of the gas builds up in a 層 on the surface of the 星／主役にする.

When this 層 becomes 激しい enough, it produces so much 圧力 that the gas 点火（する）s in a 大規模な 爆発.

It is the light from this distant 爆破 that we see from Earth as the 外見 of the 炎 星／主役にする.

Since the hydrogen builds up at a 一貫した 率, the nova occurs at a 公正に／かなり 正規の／正選手 pattern.

The last time scientists 観察するd the 炎 星／主役にする's 外見 was in 1946. This means that it could be 明白な again at any time in the coming weeks or months.

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