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Archive for the ‘space travel’ category: Page 409

Apr 4, 2018

Space travel may hold the key to cardiac repair

Posted by in category: space travel

New research — conducted both in space and on Earth — suggests that simulated microgravity could be used to boost stem-cell therapy for cardiac repair.

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Apr 3, 2018

What if Apollo 11 had failed? Nixon’s undelivered speech

Posted by in categories: astronomy, government, science, space travel

In 1969, William Safire was President Nixon’s speech writer. He wrote the short speech shown below, and delivered it to Chief of Staff, H.R. Haldeman. The speech was to be read by Nixon in the event that the Apollo 11 lunar lander failed to launch or that some other problem caused the lander or mothership to crash back onto the surface of the moon.

In 1969, the space race was at full throttle. Russians were first to launch a satellite, send a dog and a man into space,* and perform an extravehicular space walk. America was under great pressure to fulfill John F. Kennedy’s promise and beat the Russians in landing a man on the moon. Today, former engineers at NASA acknowledge that they believed the chances of such a catastrophe were more than 50%.

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Apr 2, 2018

SpaceX or ISRO, Who’s Winning the Race to Space?

Posted by in category: space travel

India’s premier space agency Indian Space Research Organisation (ISRO) has built a reputation for launching rockets into space at very convenient prices. The consequent effect?

A lot of customers from around the world have come flocking to avail India’s economical rocket-launching services and this has helped the country make some extra bucks from its space exploration program.

However, it’s a pretty competitive space.

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Apr 2, 2018

Supernova shot ‘runaway star’ into space at high speed

Posted by in categories: cosmology, space travel

Astronomer Kathryn Neugent discusses how scientists found the supermassive star moving at 300,000 miles per hour—and what caused its speedy travel.

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Apr 2, 2018

A Blockchain For Mars

Posted by in categories: bitcoin, cryptocurrencies, finance, space travel

Outside John Snow Pub, arguably one of the best pubs to visit on a rainy November day in Soho, London, I was having a beer with my dear friend Alex, discussing tech and cryptocurrency like we always do. The thing that struck me the most from the conversation that Alex brought up was the technical challenges of Mars to have its own blockchain due to speed of light delays between Earth and Mars. It took me on a little journey of determining what might a blockchain on Mars look like, what are the challenges brought upon by speed of light and other factors, and how to push forward the efforts of colonizing the Red Planet.

The past few years and especially 2017 have brought cryptocurrency to the mainstream. Everyone and their grandmother can be seen at one point asking around “How can one buy bitcoin?” and “Would you buy Ripple?” among other questions. Every day, someone armed with a badly-edited whitepaper (a paper outlining how the technology works) will raise millions of dollars in Initial Coin Offerings, or ICOs (the cryptocurrency version of a stock market IPO). By now, one can see that, while 99% of the coins will probably fail due to bad planning, overpromised marketing, or because of their scammy nature, there is no doubt that the future of the cryptocurrency market is bright and it has a lot of room for growth.

The race to Mars is on going. SpaceX still is leading the efforts to allow humans for colonization of the Red Planet, most recently with their two simultaneous Falcon Heavy rocket landings.

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Apr 1, 2018

How does science fiction influence the real world?

Posted by in categories: computing, Elon Musk, space travel, virtual reality

The tech-industry is led by sci-fi nerds who want to create the things they read about, or saw on screen.

We all stand to benefit, provided that is, they can avoid the ethical pitfalls depicted in science fiction.

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Mar 29, 2018

Astro litter-picker launches to help clean up 7,600 tonnes of space junk

Posted by in categories: Elon Musk, space travel

T he world’s most advanced litter-picker will be launched into space next week to clean up floating debris which is threatening satellites and the International Space Station (ISS).

Surrey University has designed a spacecraft which can grab space junk then pull it into Earth’s atmosphere where it is burned up.

The little craft, named RemoveDebris, is due to launch from the Kennedy Space Centre on Monday, on board one of Elon Musk’s SpaceX Falcon 9 rockets.

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Mar 29, 2018

The Alt Rocket Tech That May One Day Take Humans to Mars

Posted by in category: space travel

A one-way trip to Mars with conventional chemical rockets could take up to nine months. It’s a long time for humans to be in a spaceship exposed to radiation and other hazards. That’s one reason NASA, space agencies, universities, and private industry are pursuing different rocket technologies. Here’s a look at them.

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Mar 28, 2018

Asteroids to serve as refuelling stations for space exploration

Posted by in categories: business, space travel

Many asteroids are rich in minerals, metals and water, making them potential life support systems for humans venturing deep into the solar system.

“Asteroids contain all the materials necessary to enable human activity,” says Peter Stibrany, chief business developer and strategist of California-based Deep Space Industries (DSI). “Just those near Earth could sustain more than 10bn people.”

Moreover, their relatively small mass means their gravitational field is weak, so in this respect, at least, they are much easier than larger bodies such as the moon to land on and leave, he argues.

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Mar 28, 2018

New image shows how the Sun changes over a 22-year cycle

Posted by in categories: particle physics, space travel

Out of billions of stars in the Milky Way galaxy, there’s one in particular, orbiting 25,000 light-years from the galactic core, that affects Earth day by day, moment by moment. That star, of course, is the sun. While the sun’s activity cycle has been tracked for about two and a half centuries, the use of space-based telescopes offers a new and unique perspective of our nearest star.

The Solar and Heliospheric Observatory (SOHO), a collaboration between NASA and the European Space Agency (ESA), has been in space for more than 22 years — the average length of one completed solar magnetic cycle, according to an image caption from ESA. In the new image, SOHO researchers pulled together 22 images of the sun, taken each spring over the course of a full solar cycle. When the sun is at its most active, strong magnetic fields show up as bright spots in the sun’s outer atmosphere, called the corona; black sunspots appear as concentrations of magnetic fields reduce the sun’s surface temperature during active periods as well.

Throughout the sun’s magnetic cycles, the polarity of the sun’s magnetic field gradually flips. This initial phase takes 11 years, and after another 11 years, the magnetic field’s orientation returns to where it began. Monitoring the entire 22-year cycle provided significant data regarding the interaction between the sun’s activity and Earth, improved space-weather forecasting capabilities and more, ESA officials said in the caption. SOHO has revealed much about the sun itself, capturing “sunquakes,” discovering waves traveling through the corona and collecting details about the charged particles it propels into space, called the solar wind.

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