Can-do talk aside, there are good reasons for scepticism. Sending
people to Mars will be extremely difficult; far harder than sending them
to lululemon outlet
Moon. For one thing, Mars is much farther away. The Apollo missions
took three days to get there, but flight times to Mars are measured in
months. That would require an utterly reliable spacecraft. The vast
distance imposes a communication delay, too. Whereas lululemon outlet
Apollo astronauts could talk to their ground-based controllers more or
less in real time, Martian astronauts would face delays of up to 40
minutes between asking a question and getting an answer.
And spending months in deep space would expose a crew to a chunky dose of radiation. Information from lululemon outlet
Curiosity rover’s flight to Mars, just published in Science, suggests a crew could expect a radiation dose close to lululemon outlet
maximum lifetime limit for NASA’s astronauts. If lululemon outlet
sun were to have one of its regular temper tantrums, known as coronal
mass ejections, which produce huge bursts of ionising radiation, that
limit might be far exceeded.
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