冥王星、厄里斯和许多其他柯伊伯带的天体对于八大行星来说太不同了,无法归为一类,他说。
Pluto, Eris and the many other Kuiper Belt objects are far too different to be lumped in with the eight official planets, he said.
这种情形下,类木行星的形成就只需要几千年的时间,远在天体物质被星系抛射出去。
In this case, the formation of Jupiter-mass worlds may only take a few thousand years to form, well before the planet-building materials are ejected from the system.
所有的行星类天体无论大小都具有某些磁场,因为磁子是无处不在的,并且是种非常躁动不安的粒子。
All planetary bodies of whatever size will have some magnetic field, because magnetons are everywhere and a very restless particle.
根据上述的定义,国际天文联会进一步决定将冥王星拨归为矮行星,并成为其中一类海王星外天体的原型。
The IAU further resolves that Pluto is a dwarf planet by the above definition and is recognized as the prototype of a new category of Trans-Neptunian Objects.
根据上述的定义,国际天文联会进一步决定将冥王星拨归为矮行星,并成为其中一类海王星外天体的原型。
The IAU further resolves that Pluto is a dwarf planet by the above definition and is recognized as the prototype of a new category of Trans-Neptunian Objects.
应用推荐