Vocab Bloom Hub

oort cloud

/ɔːrt klaʊd/

翻译: 理论上围绕太阳的球状冰质微行星云,距离最远可达约10万天文单位,被认为是长周期彗星的来源。

1 个条目

phrase

/ɔːrt klaʊd/C1formalscientific
  • zh理论上围绕太阳的球状冰质微行星云,距离最远可达约10万天文单位,被认为是长周期彗星的来源。

A theoretical, spherical cloud of icy planetesimals surrounding the Sun at a distance of up to 100,000 astronomical units, believed to be the source of long-period comets.

  1. Spherical cloud of icy bodiesC2formal

    A theoretical, spherical cloud of icy planetesimals surrounding the Sun at a distance of up to 100,000 AU, believed to be the source of long-period comets.

    zh奥尔特云

    • The Oort Cloud is thought to be the origin of many comets that enter the inner solar system.
    • Astronomers have not directly observed the Oort Cloud due to its immense distance.
    • The Voyager probes will take tens of thousands of years to reach the Oort Cloud.