星际物质 [天] interstellar matter
- 大卫·赫尔方:目前就大小超过一千米的星际物质的有关调查已接近尾声。
David Helfand: Right now, the survey is pretty complete for objects larger than a kilometer in size. - 椭圆星系中有多达万亿颗古老的恒星,但几乎没有灰尘和其他星际物质。
Elliptical galaxies contain many older stars, up to one trillion, but little dust and other interstellar matter. - 有个问题,谭说,在巨型与小恒星间,谁的形成机制更有效,因为那可能是确定星际物质形成机制。
One question, Tan says, is how efficiently the process works for massive versus light stars, because that's likely to be the mechanism that determines stellar mass.
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