Scientists have struggled to explain how it vanished,
leaving the planet vulnerable to solar winds, which probably stripped away its atmosphere and surface water (SN: 12/12/15, p. 31).
Not exact matches
The power hungry king of Spartax, J - Son, has cordoned off the
planet Earth,
leaving it
vulnerable to attack from outside forces.
Specifically, not having other
planets as trial runs or as backups for failure
leaves us much too
vulnerable.