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  3. A、A star is discovered that emits lower levels of trace ions than those discover

A、A star is discovered that emits lower levels of trace ions than those discover

游客2024-01-12  65
问题
选项 A、A star is discovered that emits lower levels of trace ions than those discovered by x-rays of our galaxy’s sun.
B、A section of the universe is discovered to lack both stars and any sort of interstellar medium.
C、A galaxy is discovered with a negative rate of star formation.
D、In one corner of the galaxy, coronal gas is discovered to rarify as it becomes cooler.
E、A superbubble is found of equal mass to the galaxy surrounding it.
答案 D
解析
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