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Showing posts with label International Space Station. Show all posts
Showing posts with label International Space Station. Show all posts

Saturday, August 1, 2015

A New Science Fiction Radiates a Rosier View

November 1931 issue of Everyday Science and Me...
November 1931 issue of Everyday Science and Mechanics (Photo credit: Wikipedia)
BY NICK BILTON


Imagine living in a weird science-fiction story where everything you dreamed up actually came true.

Well, for decades science-fiction writers have been making bold predictions. But now writers are starting to realize that in predicting the future, they have helped shape it.

For example, sci-fi authors first envisioned credit cards, which go all the way back to 1888 when Edward Bellamy wrote about them in his novel “Looking Backward.”

Additionally, solar power and radar were envisioned by Hugo Gernsback in his 1911 magazine stories; H.G. Wells anticipated voice mail in 1923; in- ear headphones and large flat-screen TVs were in Ray Bradbury’s 1953 novel, “Fahrenheit 451”; virtual reality was dreamed up by Arthur C. Clarke in 1956; Jules Verne told stories about electronic submarines all the way back in 1870; and Martin Cooper, who created the first mobile phone, said the idea came to him after watching “Star Trek.”

But not all of the predictions have been rosy. Atomic bombs first appeared in Wells’s 1914 novel “The World Set Free”; George Orwell aptly predicted -- and maybe contributed to -- a surveillance state in “Nineteen Eighty-Four”; and writers have been envisioning destructive weapons of all shapes and sizes, including biological warfare, for centuries.

Now some of these visionaries have banded together to offer stories that are more utopian, which they hope will contribute to a more positive future.

In 2011, Arizona State University’s president, Michael Crow, challenged Neal Stephenson, the author of several sci-fi novels, to stop writing dystopian stories, and offer ideas with a brighter outlook. The concept caught on and last month a group of writers, in collaboration with the university, released “Hieroglyph: Stories and Visions for a Better Future,” which hopes to be a blueprint for these new concepts.

“Sci-fi stories have helped shape technology at crucial points,” said Kathryn Cramer, co-editor of Hieroglyph. “But a lot of the past was dystopian. We’re hoping to show that there are a lot of things we can do better.”

Writers are pushing back in particular against Hollywood’s depiction of the future -- you know, where robots roam the earth killing puppies and enslaving humans.

For example, “Transcendence, “an action film this year, stars Johnny Depp, who plays a brilliant scientist who is resurrected as an artificial intelligence program that becomes evil. Or “12 Monkeys,” in which a man-made virus wipes out most of the planet’s population.

“I got into a little bit of a rut thinking that the way to be cool was to be cynical and dark,” Mr. Stephenson said. “I don’t regret that at all. Now I have a license to go out and try something with a different tone.”

His story in the new collection is about an engineer’s effort to build a 20-kilometer-tall skyscraper. Other tales envision an alternative Internet that is free from government snooping and corporate tracking, and is powered by thousands of homemade drones. Another story is about a group of hardware hackers and Burning Man devotees who build an autonomous 3-D printing robot that goes to the moon. A third imagines a future world without border fences.

The stories still offer plenty of drama, death and destruction, but many have a sort of happy ending. Cory Doctorow, a contributor to Hieroglyph, wrote that the stories are not “optimistic or pessimistic about the future. Instead they are hopeful about it.”

Last month, the editors of the collection took a trip collection took a trip around Silicon Valley, giving talks at big companies, including Google- which is building a bunch of robots that may one day roam the earth, but (one hopes) won’t enslave people-to try to persuade engineers to think differently.

While Mr. Stephenson isn’t so naïve as to think that these sci-fi narratives will make the world a better place, he hopes that they can have a constructive influence.

“There’s definitely some kind of a feedback loop,” he said, “between science fiction and technological fact.” 


Taken from TODAY Saturday Edition, The New York Times International Weekly, October 11, 2014

Monday, May 25, 2015

Planet Mercury Is Shown To Be More Than a Little Bore

English: Artist's rendering of the MESSENGER s...
English: Artist's rendering of the MESSENGER spacecraft orbiting Mercury (Photo credit: Wikipedia)
By KENNETH CHANG


NASA’s Messenger spacecraft, in orbit around Mercury for the past four years, came to an abrupt end on April 30 when it crashed into the surface.

That event brought to a close a mission that has painted an unexpected portrait of Mercury, once thought a boring round rock not much different from Earth’s moon. Mercury, the smallest planet in our solar system, is only slightly larger than the moon, although it has more drastic temperature swings – 427 degrees Celsius during the day, minus 184 degrees at night.

“It’s really been exciting to see a planet unfold, a planet that is one of our neighbors,” said Sean C. Solomon, the principal investigator for the mission. “Almost every aspect of Mercury has had its share of surprises.”

Messenger – a shortening of Mercury Surface, Space Environment, Geo-chemistry and Ranging – discovered that Mercury shrank slightly as it cooled over billions of years; mapped ancient lava flows; found enigmatic shallow depressions that are some of the youngest and brightest features on the surface; and confirmed the presence of ice in perpetually dark crates near the poles.

The water ice, perhaps a billion tons, was not a complete surprise. Radio telescope observations from Earth had hinted at something reflective, and the shadowed craters are extremely cold. Beyond confirming the suspected, Messenger also made a new discovery: The ice was covered by an unexplained dark layer.

“We have a reasoned hypothesis,” Dr. Solomon said. The material could be carbon-rich compounds, similar to substances found in certain meteorites and in comets. “It’s tarlike in its consistency,” he said. “It’s as dark as tar.”

The biggest scientific finding of the mission, Dr. Solomon said, was that Mercury was rich in “volatiles,” elements like chlorine, sulfur, potassium and sodium that easily evaporate at moderate temperatures. Mercury is small and dense, full of iron, and the thinking about how it formed was that it must have been heated to temperatures that should have boiled off the volatiles. Yet the volatiles are still there.

Scientists now have to come up with new ideas to explain how Mercury formed. When NASA launched Messenger in 2004, knowledge of Mercury was sparse. The only close-ups had come in three flybys by NASA’s Mariner 10 in the 1970’s

For more than six years, Messenger took a circuitous route through the inner solar system, making flybys of Earth, Venus and Mercury, to slow itself down enough to enter orbit around Mercury. On March 18, 2011, finally arrived.

The orbital portion of the mission was to last one year, then was extended twice.

Even the craft’s destruction could provide insights by digging up what lies beneath the surface- but it will be some time before anyone will see what that is. NASA does not have any follow-up Mercury missions set, but an ambitious European and Japanese collaboration called BepiColombo is scheduled to launch in 2017. It is to arrive at Mercury in 2024.

That mission consists of two orbiters, one focusing on the planet, the other on the surrounding space environment, in greater and finer detail than Messenger.

Johannes Benkhoff, the project scientist for BepiColombo at the European Space Agency, described Messenger as “really a fantastic mission.”

“It’s perfect that we have BepiColombo to follow on” Messenger’s findings, Dr. Benkhoff said. “They have provided a lot of new results, unexpected results.”

BepiColombo is named after Giuseppe Colombo, an Italian scientist nicknamed Bepi who came up with the orbital trajectories that enabled NASA’s Mariner10 flybys.

Dr. Solomon is looking forward to the next trip to Mercury I still want to learn more about, “he said.


Taken from TODAY Saturday Edition, The New York Times International Weekly, May 9, 2015