{"id":15585,"date":"2016-04-13T22:49:07","date_gmt":"2016-04-13T14:49:07","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/russian-billionaire-devotes-100-million-to-star-flight-initiative\/"},"modified":"2016-04-13T22:49:07","modified_gmt":"2016-04-13T14:49:07","slug":"russian-billionaire-devotes-100-million-to-star-flight-initiative","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/russian-billionaire-devotes-100-million-to-star-flight-initiative\/","title":{"rendered":"Russian billionaire devotes $100 million to star flight initiative"},"content":{"rendered":"

STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION<\/p>\n

\"Entrepreneur
Entrepreneur Yuri Milner, holding up a prototype StarChip spacecraft he hopes to develop and, within a generation, launch to the nearest star using ground-based lasers and ultra-thin light sails. Credit: Bryan Bedder\/Getty Images for Breakthrough Starshot<\/figcaption><\/figure>\n

Russian billionaire Yuri Milner plans to spend $100 million over the next few years to begin developing the technology needed to build a giant laser array to propel swarms of postage stamp-size spacecraft off on 20-year-long interstellar flights to Alpha Centauri, the nearest star system to the sun, the internet investor announced Tuesday.<\/p>\n

The tiny 1-gram nanocraft, or \u201cStarChips,\u201d would be equipped with small, ultra-thin light sails and accelerated, one at a time, to 20 percent the speed of light by a powerful half-mile-wide array of ground-based lasers, boosting them to a cruise velocity of some 37,200 miles per second in a few minutes.<\/p>\n

From that point on, the tiny spacecraft would sail on their own across the immense 4.3-light-year \u2014 25-trillion-mile \u2014 gulf, flying through the Alpha Centauri system about 20 years after launch. Each surviving \u201cspacecraft on a chip\u201d would snap pictures and beam the data back to Earth using tiny on-board lasers, the faint signals arriving four years later.<\/p>\n

To put the immensity of the proposed trip into perspective, imagine shrinking the 92 million miles separating the Earth from the sun to 1 inch. At that scale, Alpha Centauri would be about 4.5 miles away. An Apollo moonship traveling at 25,000 mph \u2014 the fasted piloted spacecraft ever flown \u2014 would need 114,000 years to reach the Alpha Centauri system, made up of two and possibly three stars.<\/p>\n

Milner, named after cosmonaut Yuri Gagarin, who became the first man in space 55 years ago to the day, and famed physicist Stephen Hawking unveiled the \u201cBreakthrough Starshot\u201d project during a briefing on the observation deck atop One World Trade Center in New York.<\/p>\n

Facebook founder Mark Zuckerberg also is a board member and Pete Worden, the former director of NASA\u2019s AMES Research Center, will serve as program executive.<\/p>\n

Milner, a self-described science philanthropist and founder of DST Global, an internet investment firm, announced plans last July to spend $100 million to expand and accelerate the on-going search for extra-terrestrial intelligence, or SETI, another \u201cbreakthrough initiative\u201d supported by Hawking and directed by Worden.<\/p>\n

But the Breakthrough Starshot project is clearly his most ambitious undertaking, the first real effort to develop proof-of-concept technology aimed at interstellar flight.<\/p>\n

Even so, Milner believes the technology to accomplish the first star voyage is nearly in hand and after initial research and development, funded with his $100 million, prototypes could be built and tested with additional funding.<\/p>\n

The final cost of the project would rival the money spent on the largest science projects in the world, such as NASA\u2019s $8.8 billion James Webb Space Telescope or the $10 billion Large Hadron Collider in Europe. But Milner believes the goal can be accomplished within a single generation, and he hopes to be around to witness the initial launches.<\/p>\n

\u201cThe limit that confronts us now is the great void between us and the stars,\u201d Hawking said through a speech synthesizer. \u201cBut now we can transcend it. With light beams, light sails and the lightest spacecraft ever built, we can launch a mission to Alpha Centauri within a generation. Today, we commit to this next great leap into the cosmos because we are human, and our nature is to fly.\u201d<\/p>\n

\"Credit:
Credit: Bryan Bedder\/Getty Images for Breakthrough Starshot<\/figcaption><\/figure>\n

The concept is relatively straight forward. In principal, at least.<\/p>\n

Milner said each nanocraft would be built around a 1-gram StarChip about the size of a large postage stamp.<\/p>\n

\u201cThis is a StarChip,\u201d he said, holding a prototype between thumb and forefinger. \u201cA gram-scale wafer containing cameras, photon thrusters, power supply, navigation and communications equipment. It\u2019s about the size of a large postage stamp, only a little bit thicker. This is the Silicon Valley approach to spaceflight: a fully functional space probe that can be held with two fingers and mass produced at the cost of an iPhone.\u201d<\/p>\n

Each nanocraft would be equipped with an ultra-thin light sail just a few meters across and weighing a gram or less. A few hundred to a thousand or more StarChips would be packed into a cargo carrier atop a conventional rocket and launched to geosynchronous altitude 22,300 miles above the equator.<\/p>\n

The nanocraft then would be released into space, once every day or so, to await their boost to Alpha Centauri.<\/p>\n

That enormous kick would come from the combined light of synchronized lasers in a 1-kilometer-wide (0.62-mile-wide) array. The width of the beam at geosynchronous altitude would be about 13 feet across, packing an enormous amount of energy into a small area.<\/p>\n

\u201cIf I pointed this laser at a nanocraft in space the light would actually push it,\u201d Milner said, holding a small laser pointer. \u201cNot super fast. If I do this for a full day, it will push the nanocraft to about the speed of an ant. But advances in photonics have led to the development of phased light beams, many small lasers forming one powerful beam.\u201d<\/p>\n

Avi Loeb, chair of the astronomy department at Harvard University and chairman of the Breakthrough Starshot advisory committee, said the energy required to send a StarChip to Alpha Centauri at 20 percent the speed of light is roughly 100 gigawatts, \u201csimilar to the power needed to lift off the space shuttle.\u201d<\/p>\n

The collimated beam hitting the sail of a nanocraft would accelerate it to cruise velocity in about two minutes, he said, briefly subjecting the craft to 60,000 times the force of Earth\u2019s gravity.<\/p>\n

The spacecraft then would spend 20 years in transit before streaking through the Alpha Centauri system, snapping pictures of any planets they might find, perhaps recording environmental and other data and beaming it all back to Earth before flying out of the distant solar system and continuing on into the galaxy.<\/p>\n

Swarms of nanocraft will be launched to protect against internal failures, guidance problems and high-speed collisions with unseen space dust and debris.<\/p>\n

\"Artist's
Artist\u2019s concept of a chip-sized spacecraft and its solar sail departing Earth after deployment from its rocket booster. Credit: Breakthrough Starshot<\/figcaption><\/figure>\n

The project would be carried out in three stages: initial research and development, funded by Milner\u2019s $100 million; proof-of-concept demonstration flights, which would cost an additional few hundred million dollars; and finally, assembly of the actually nanocraft and laser array.<\/p>\n

The phased-array laser system, or \u201clight beamer,\u201d will pose major challenges. Loeb said engineers will have to figure out how to synchronize enormous numbers of powerful lasers, design and build adaptive optics systems to counteract turbulence in Earth\u2019s atmosphere and come up with precision beam guidance techniques.<\/p>\n

\u201cBreakthrough Starshot aims to bring economies of scale to the astronomical scale,\u201d the backgrounder said. \u201cThe StarChip can be mass-produced at the cost of an iPhone and be sent on missions in large numbers to provide redundancy and coverage. The light beamer is modular and scalable. Once it is assembled and the technology matures, the cost of each launch is expected to fall to a few hundred thousand dollars.\u201d<\/p>\n

Milner doesn\u2019t believe government funding is required to see the project through to completion, although it would certainly help. Worden said NASA managers briefed on the project have expressed interest. Funding aside, international consensus will be required before launching spacecraft to a different solar system.<\/p>\n

\u201cThe very nature of the project calls for global co-operation and support,\u201d Milner\u2019s release said. \u201cClearance for launches would be required from all the appropriate government and international organizations.\u201d<\/p>\n

Email the author.<\/i><\/b><\/p>\n

Follow Stephen Clark on Twitter: @StephenClark1.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION Entrepreneur Yuri Milner, holding up a prototype StarChip spacecraft he hopes to develop and, within a generation, launch to the nearest star using ground-based lasers and ultra-thin light sails. Credit: Bryan Bedder\/Getty Images for Breakthrough Starshot Russian billionaire Yuri Milner plans to spend $100 million over the next […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[3752,3753,2571,3754,2575,3755,3756],"class_list":["post-15585","post","type-post","status-publish","format-standard","hentry","category-news","tag-alpha-centauri","tag-breakthrough-starshot","tag-interstellar-travel","tag-seti","tag-solar-sail","tag-stephen-hawking","tag-yuri-milner"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/15585"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=15585"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/15585\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=15585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=15585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=15585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}