Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
spacecraft – n. a vehicle that travels in space
magnetosphere - n. an area of space surrounding an object in space that is dominated by the object’s magnetic field
erupt – v. to send out rocks, ash, lava etc in a sudden explosion
elongated – adj. something that is long
mission – n. a task or job that someone is given to do
