(astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comets orbit and may send it tumbling toward the sun
Here, we show that the detection of Borisov implies that interstellar objects outnumber Solar system objects in the Oort cloud, whereas the reverse is true near the Sun due to the stronger ...查看文章
Oort cloud与发音含义,同义词,反义词,翻译,刑和更多的