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Why science breeds a culture of sexism

As for materials, the only information I have comes from our own solar system. The Earth alone has more mass than asteroid belts. The closest source of material, not already in the form of planets and moons in our solar system is the Oort cloud , which according to the best estimates to date may contain enough material to make almost half a dozen Earths.

For comparison, the New Horizons probe, now en route to Pluto, is the fastest object ever made. To make things worse, almost all the mass out there is tiny grit. Other fully-formed star systems seem to be just about as clean. So you may ask yourself: Today is the golden age of planetary astronomy and astronomy in general. The mass and distance for all of the exoplanets found as of Jan. If this plot included all of the missing planets it would be solid red. Click for full size. In other words, terraforming existing planets within the goldilocks zone is a helluva lot cheaper than building one from scratch.

Why build a sphere? A thin arced surface, perhaps rotating to simulate gravity, seems much more do-able. I just feel instead of wasting time building a big planet build a real toy sized one and make stars a lamp we could support life and look like gods. A planet, although costly to make artificially, has the advantage of being tough and stable. On the other hand, I like to think of the alternatives.

What could start as a platform orbiting the Sun could become a ring and then a huge shell. People could live inside it, enjoying constant sunlight.

Q: Can we build a planet?

The rotation of the shell would create artificial gravity that keep people and the atmosphere close to the shell, which would have to be air-tight. Also, space ships could easily arrive and depart without experiencing the cost, problems, and challenges associated with dealing with the gravity of a planet.

This becomes crucial when dealing with huge ships big enough to offer a comfortable trip to another star. What about from material from the sun? How many earths could you make if you took all the carbon out of it, the amount of carbon in the sun is. And what about other life forms? Better idea to clean up earth.

It all just comes down to cost and need. Then there are people who say 'why bother', because most of the experiments we want to do in space need to be done in weightlessness," Page says. Use these social-bookmarking links to share Why don't we build spinning spaceships that create artificial gravity?

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By clicking 'Send to a friend' you agree ABC Online is not responsible for the content contained in your email message. Bright spots on the dwarf planet Ceres are giant salt pans. Also; climate change slowing the planet's rotation, and searching for the universe's missing matter.

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  7. Site Navigation Video Audio Photos. A warp drive would require an enormous amount of energy. Theoretical calculations using dark energy to move a starship would require more energy than that contained within the planet Jupiter, making it uneconomical.

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    In the "Star Trek" universe, the warp drive relied on antimatter. When matter and antimatter annihilate one another, the energy produced is immense. Though such an energy source could conceivably power the ship, it is available only briefly. Crowl pointed out that antimatter technology itself is developing rapidly. Ultra-high intensity lasers may soon allow it to be directly created from energy, and useful amounts may be trapped in the magnetic fields of planets like Earth and Saturn. When mankind finally travels to the stars, we may have to forgo warp speed for something else, such as the manipulation of space-time itself.

    According to Albert Einstein, nothing in the universe can travel faster than the speed of light. But Millis points out that such limits do not necessarily apply to space-time. Theories in peer-reviewed journals explore the possibility of surrounding a craft with a bubble of space-time that expands and contracts, perhaps allowing it to exceed the speed of light.

    Warp Drives and Worm Holes ]. Another potential challenge to recreating the "Star Trek" universe is the system of matter transmission.

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    The crew often traveled to a planet by transporter, beaming from the Enterprise directly to the surface by way of machines that could scan a body, atom-by-atom, and then recreate it in another place. Recent advances have been made in quantum teleportation , but Obousy and Millis both stressed the difference from "Star Trek"-style travel. In quantum teleportation, "it's not the same photon you started out with, but a replica," said Obousy. Millis suggested that, rather than matter transmission, scientists might one day learn how to utilize very small wormholes for travel.

    Ultimately, the greatest challenge to replicating the Star Trek journeys may not come from the technological front.

    Could We Build 'Star Trek's' Starship Enterprise?

    When I think about relative impossibilities, I think it will be easier to make technology for the starship Enterprise than to finally make humans behave that honorably. Nola Taylor Redd is a contributing writer for Space. She loves all things space and astronomy-related, and enjoys the opportunity to learn more.