However "Express" also describes the spacecraft's relatively short interplanetary voyage, a result of being launched when the orbits of Earth and Mars brought them closer than they had been in about 60,000 years.
Namun, "Express" juga mendeskripsikan perjalanan antarplanet yang relatif cepat karena diluncurkan ketika orbit Mars dan Bumi sedang dekat dibanding 60.000 tahun sebelumnya.