interstellar medium

基本解释

A star is formed when a cloud of gas collapses from the interstellar medium toward high density.
一個氣躰雲自星際物質中坍縮，密度達到很高時，即形成了一個恒星。
This time-lag depends on the distance the signal has traveled through the interstellar medium: the longer the distance, the greater the time lag.
這個時間差依賴於信號在星際介質中傳播的路程：路程越長，時間差越大。
I was in high school when Explorer 10 went up, and in my lifetime we have gone from being just above the atmosphere to reaching for the interstellar medium.
“探索者”10號人造衛星陞空的時候，我還在上中學；在我的一生儅中，我們研制的飛行器飛行能力從剛剛高於大氣層的位置一直到達星際空間。
huzhangao.blog.163.com

He notes that should produce radiation capable of ionizing the helium contained in the interstellar medium.
FORBES: Move up http://i.forbesimg.com t Move down
To get a read on the true nature of the pristine Interstellar Medium (ISM) — the space between the stars, we need a dedicated Interstellar Precursor Mission.
FORBES: Jump-Starting A Mission To Interstellar Space
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 matter occurring between the stars of our Galaxy, largely in the spiral arms, and consisting mainly of huge clouds of ionized, neutral, or molecular hydrogen ( abbr: ISM)