How to Search for Life on Mars Future missions to the Red Planet may carry tools of microbiology that can reveal whether life once existed on our closest neighborMcKay, C.P.Garcia, V.P.SCIENTIFIC AMERICAN -AMERICAN EDITION-
"Water is key because almost everywhere we find water on Earth we find life," NASA's web site points out. "If Mars once had liquid water, or still does today, it's compelling to ask whether any microscopic life forms could have developed on its surface." The first missions to Mars ...
How much fuel does it take to get to Mars perseverance? To burn its fuel, a rocket must have more oxygen by weight. Getting four astronauts off the Martian surface on a future mission would requireapproximately 15,000 pounds (7 metric tons) of rocket fueland 55,000 pounds (25 metric ton...
In the future, people will live on Mars. What an amazing planet it will be! / How amazing the planet Mars will be! - What an amazing planet it will be! - How amazing the planet Mars will be! - What a beautiful planet Mars will be! - How beautiful the planet Mars will be! -...
Travel is good for us. But tourism also impacts the places we visit – in good ways and bad. We speak with experts on how travellers can avoid the pitfalls of tourism while getting more out of their experiences
[00:00.04]For future humans to survive long periods on Mars, [00:04.60]growing food on the planet is a must. [00:08.08]It would be too costly and risky [00:11.16]to rely upon rocket deliveries [00:13.48]to meet the...
Volcanic activity has certainly played a significant and destructive role in our history, and will continue to do so in the future. This is only half the story, however. As destructive as it is, volcanic activity is one of the most important, constructive geological processes on Earth. After...
For future humans to survive long periods on Mars, growing food on the planet is a must.为了让未来的人类在火星上长期生存,在地球上种植食物是必须的。 It would be too costly and risky to rely upon rocket deliveries to meet the food needs of colonists.依靠火箭运送来满足殖民者的食物需求成本太...
Things get very complicated from there on, so I won't go into details. Concerning transfers to Mars, these are by necessity interplanetary transfers, i.e., orbits that have the sun as central body. Otherwise, much of what was said above applies: the issue remains the expense of energy. ...
But, Jessica says, the reality is that individuals have different needs. Weight, age and activity level all affect how much water someone should drink. 多年来,人们一直遵循每天八次喝八杯水的非官方建议,即所谓的“8x8 规则”。据 BBC Future 撰稿的杰西卡·布朗 (Jessica Brown) 表示,这似乎部分是...