from the world's big
Why Elon Musk doesn't like Jeff Bezos's space colonies
Elon Musk took issue with recent ideas for space exploration from Jeff Bezos.
- Elon Musk and Jeff Bezos have sparred over space exploration previously.
- Musk wants to focus on Mars while Bezos has the moon and space colonies as goals.
- In a recent tweet, Musk called out Bezos's plans for space colonies as unrealistic.
Great rivalries often make for great progress. Thomas Edison competed against Nikola Tesla, bringing electricity to the world. Steve Jobs's on-and-off feud with Bill Gates largely defined the computer age, resulting in rapid innovation. Will the battle of the tech barons Elon Musk and Jeff Bezos come to fuel the space age?
While they have already sparred publicly on previous occasions, the latest salvo between Musk and Bezos stems from different visions for space exploration and settlement. While Bezos is focused on the moon and recently-announced space colonies, Musk has made Mars the main destination for Space X.
Earlier in May 2019, Bezos presented a new lunar lander called Blue Moon. Designed by his rocket company Blue Origin, the lander will be able to delivery a variety of payloads to the moon, aiding in its colonization.
The announcement of the lander also included Bezos's overall vision for the future of humans in space. He sees a trillion people living at different parts of the universe. Where would they live? To a large extent in O'Neill Colonies, thinks Bezos.
Jeff Bezos, owner of Blue Origin, introduces a new lunar landing module called Blue Moon during an event at the Washington Convention Center, May 9, 2019 in Washington, (Photo by Mark Wilson/Getty Images)
Photo by Mark Wilson/Getty Images
An O'Neill colony or O'Neill cylinder, is a concept espoused by the American physicist Gerard K. O'Neill in his 1976 book The High Frontier: Human Colonies in Space. Such a cylinder would actually have two five-mile-long counter-rotating cylinders, rotating in opposite directions and cancelling out any gyroscopic effects. This would also result in artificial gravity via the effect of the centrifugal force on the insides of the cylinders.
In the speech that mentioned the colonies, Bezos also indirectly challenged Musk's vision, saying that going to Mars is too distant and problematic to aid in human progress.
In a tweet from May 23rd, Elon Musk struck back, attacking Bezos's ideas as unrealistic. "Makes no sense," wrote Musk. "In order to grow the colony, you'd have to transport vast amounts of mass from planets/moons/asteroids. Would be like trying to build the USA in the middle of the Atlantic Ocean."
Which billionaire gets to try out their ideas for building a space colony first remains to be seen. Here's how Musk would settle Mars:
Watch Elon Musk Reveal SpaceX's Most Detailed Plans To Colonize Mars
What would it be like to experience the 4th dimension?
Physicists have understood at least theoretically, that there may be higher dimensions, besides our normal three. The first clue came in 1905 when Einstein developed his theory of special relativity. Of course, by dimensions we’re talking about length, width, and height. Generally speaking, when we talk about a fourth dimension, it’s considered space-time. But here, physicists mean a spatial dimension beyond the normal three, not a parallel universe, as such dimensions are mistaken for in popular sci-fi shows.
Duke University researchers might have solved a half-century old problem.
- Duke University researchers created a hydrogel that appears to be as strong and flexible as human cartilage.
- The blend of three polymers provides enough flexibility and durability to mimic the knee.
- The next step is to test this hydrogel in sheep; human use can take at least three years.
Duke researchers have developed the first gel-based synthetic cartilage with the strength of the real thing. A quarter-sized disc of the material can withstand the weight of a 100-pound kettlebell without tearing or losing its shape.
Photo: Feichen Yang.<p>That's the word from a team in the Department of Chemistry and Department of Mechanical Engineering and Materials Science at Duke University. Their <a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.202003451" target="_blank">new paper</a>, published in the journal,<em> Advanced Functional Materials</em>, details this exciting evolution of this frustrating joint.<br></p><p>Researchers have sought materials strong and versatile enough to repair a knee since at least the seventies. This new hydrogel, comprised of three polymers, might be it. When two of the polymers are stretched, a third keeps the entire structure intact. When pulled 100,000 times, the cartilage held up as well as materials used in bone implants. The team also rubbed the hydrogel against natural cartilage a million times and found it to be as wear-resistant as the real thing. </p><p>The hydrogel has the appearance of Jell-O and is comprised of 60 percent water. Co-author, Feichen Yang, <a href="https://today.duke.edu/2020/06/lab-first-cartilage-mimicking-gel-strong-enough-knees" target="_blank">says</a> this network of polymers is particularly durable: "Only this combination of all three components is both flexible and stiff and therefore strong." </p><p> As with any new material, a lot of testing must be conducted. They don't foresee this hydrogel being implanted into human bodies for at least three years. The next step is to test it out in sheep. </p><p>Still, this is an exciting step forward in the rehabilitation of one of our trickiest joints. Given the potential reward, the wait is worth it. </p><p><span></span>--</p><p><em>Stay in touch with Derek on <a href="http://www.twitter.com/derekberes" target="_blank">Twitter</a>, <a href="https://www.facebook.com/DerekBeresdotcom" target="_blank">Facebook</a> and <a href="https://derekberes.substack.com/" target="_blank">Substack</a>. His next book is</em> "<em>Hero's Dose: The Case For Psychedelics in Ritual and Therapy."</em></p>
Vaccines find more success in development than any other kind of drug, but have been relatively neglected in recent decades.
Vaccines are more likely to get through clinical trials than any other type of drug — but have been given relatively little pharmaceutical industry support during the last two decades, according to a new study by MIT scholars.
Sallie Krawcheck and Bob Kulhan will be talking money, jobs, and how the pandemic will disproportionally affect women's finances.