Posts Tagged: ‘space exploration’

As a science writer, Mary Roach has penned books on everything from cadavers to astronauts. In this episode, Allison and Robert interview Mary Roach about the future of space exploration. Listen in to learn what you’ll need to pack for a trip to Mars.

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It’s no secret that space shuttles need a vast amount of fuel to escape the pull of gravity — but are space elevators a better alternative? In this episode, Robert and Allison explore the merits of literally building an elevator from Earth into space.

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The Japanese Hayabusa probe is scheduled to return on Sunday. This was an outrageous mission, especially for Japan – the goal was to land on an asteroid, collect a sample from its surface and then bring the sample back to earth for analysis. But since the asteroid is so small (only 590 meters long, and therefore hardly any gravity), “landing” is more like docking, and the mothership in this case (the asteroid) has an unknown surface. The probe had to be “smart” enough to handle the docking on its own. The following video explains how the docking happened, as well as explaining the whole mission profile…

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Think you have what it takes to endure a five-month stay in orbit? Be prepared to go through some psychological changes. According to nearly a decade of Russian observations and a 1993 report on human adaptation to long-duration space flight, you’ll probably become incredible irritable — and possibly start to feel like all humanity is interconnected in a vast web than spans the cosmos. Yes, space euphoria: it’s actually a thing, man.

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NASA is currently formulating a plan to send several missions to Earth’s other sister world, Venus, according to an article today in New Scientist. Numerous U.S. and Soviet spacecraft have made the journey in the past, including both unmanned satellites and unmanned surface probes. What sets this proposed Venus mission apart is the use of high-altitude balloons to study the planet’s upper atmosphere.

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The idea behind a gravity assist is to use a planet’s motion to accelerate a satellite. Check out our article on HowStuffWorks to learn more about the effects of gravity on satellites.

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Voyager II uses a radioisotope thermo-electric generator power to communicate with NASA. Learn more about RTG in this HowStuffWorks podcast.

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