rift
n
1 split, crack, break, etc 裂缝; 裂口; 破裂处
a rift in the clouds 云中的缝隙.
2 serious disagreementbetween friends, members of a group, etc (朋友、 成员等之间的)不和, 裂痕
a growing rift between the two factions 两派日益扩大的裂痕.
A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system.