At the upper right lies NGC 7635 (the Bubble Nebula) and star cluster M52.

影像右上角有称为泡泡星云的NGC 7635和星团m 52。

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The same cannot be said for the recently discovered Soap Bubble Nebula, however.

然而，对于最近发现的肥皂泡星云（Soap Bubble Nebula）来说，情况就不同了。

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The Bubble Nebula, pictured above in scientifically mapped colors to bring up contrast, is about 10 light-years across and part of a much larger complex of stars and shells.

泡泡星云，大约10光年大小，并且是更大、更复杂的星球与泡泡的一部份。上图套用有科学意义的颜色，以提高对比。

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He chose this because the supernova that created it blew a giant bubble, known as the Vela nebula, out of the surrounding interstellar medium, and that bubble is big enough to stand in for the infinite sheet of gas.

ECONOMIST: Pulsars: In a wink | The