- Space explorers will have to face the challenge of venturing beyond the reach of our human tribe, says Felicity Aston
- I was not sacred of the risk but terrified of being so utterly isolated, she says
- Aston: We humans are emotional beings, which means we often react in illogical and unexpected ways
British explorer Felicity Aston was the first woman to ski across Antarctica alone and is the author of "Alone in Antarctica" that recounts her expedition experiences. She has been honored by her country with an MBE for services to exploration and awarded The Queen's Polar Medal. You can follow her on Twitter at @felicity_aston The opinions expressed in this commentary are solely those of the author.
(CNN)The first interplanetary explorers may not go alone, but they will certainly be venturing way beyond the reach of our human tribe.