Lifeboat Foundation

A team of researchers with Università degli Studi di Padova and the Matera Laser Ranging Observatory in Italy has conducted experiments that add credence to John Wheeler’s quantum theory thought experiment. In their paper published on the open access site Science Advances, the group describes their experiment and what they believe it showed.

The nature of light has proven to be one of the more difficult problems facing physicists. Nearly a century ago, experiments showed that light behaved like both a particle and a wave, but subsequent experiments seemed to show that light behaved differently depending on how it was tested, and weirdly, seemed to know how the researchers were testing it, changing its behavior as a result.

Back in the late 1970s, physicist Johan Wheeler tossed around a thought experiment in which he asked what would happen if tests allowed researchers to change parameters after a photon was fired, but before it had reached a sensor for testing—would it somehow alter its behavior mid-course? He also considered the possibilities as light from a distant quasar made its way through space, being lensed by gravity. Was it possible that the light could somehow choose to behave as a wave or a particle depending on what scientists here on Earth did in trying to measure it? In this new effort, the team in Italy set out to demonstrate the ideas that Wheeler had proposed—but instead of measuring light from a quasar, they measured light bounced from a satellite back to Earth.

Continue reading “Reflecting light off satellite backs up Wheeler’s quantum theory thought experiment” »

Human settlement of the moon may go through Hawaii.

Earlier this month, an International MoonBase Summit (IMS) brought together representatives from academia, government and the private sector to help lay the groundwork for a base on the lunar surface.

“Because of its geography, geology and culture, Hawaii is the perfect place to build a MoonBase prototype,” said Henk Rogers, an entrepreneur based in Hawaii and the organizer of the IMS. [Lunar Colony: How to Build a Moonbase in Images].

Should definitely be worked on. Eventually the same stuff could be used to reverse engineer/terraform Venus.

When politicians talk about the Paris Climate Agreement, it’s usually framed in terms of restrictions on emissions for states and businesses. But the Paris Agreement wasn’t just an agreement to regulate — it was also an agreement to innovate. That’s because most experts agree that the world won’t be able to keep global temperature rise below 2 degrees Celsius, unless there’s a way to physically remove CO₂ from the atmosphere.

A Swiss startup called Climeworks has made that their goal, developing the most advanced carbon-capture technology to date. VICE News went to Switzerland to see how the technology works and hear how the business plans to tackle climate change. Problem is, what Climeworks is doing isn’t cheap.

Continue reading “Sucking CO2 from the atmosphere could save the planet — but it isn’t cheap” »

China’s FAST radio telescope has spotted a pair of pulsars thousands of light years away. The find heralds a new era in radio telescopes.

Japanese scientists discover 50km-long cave beneath #moon’s surface http://bit.ly/2ipl0mx @JAXA_en

Ecns.cn is the official English-language website of China News Service (CNS), a state-level news agency sponsored and established by Chinese journalists and renowned overseas Chinese experts on October 1, 1952.As an English-language website, Ecns.cn aims to provide all aspects of online news, including in-depth coverage, feature stories and visual content, with topics such as current events, art, lifestyle, people and travel.

“Scientists and philosophers… had always assumed that the world worked by physical laws, and if you could measure initial conditions accurately enough, those laws would let you predict the future indefinitely. As James Gleick described it in his book Chaos: Making a New Science, this view was very wrong.”

“There was always one small compromise, so small that working scientists usually forgot it was there, lurking in a corner of their philosophies like an unpaid bill. Measurements could never be perfect,” he wrote. “Scientists marching under Newton’s banner actually waved another flag that said something like this: Given an approximate knowledge of a system’s initial conditions and an understanding of natural law, one can calculate the approximate behaviour of the system. This assumption lay at the philosophical heart of science.”

“Today we know how wrong this assumption was. The Three Body Problem is now recognized as a classic example of a chaotic system. Like the butterfly that causes a hurricane by flapping its wings, it is exquisitely sensitive to initial conditions. The tiniest tweak can have massive consequences down the line.”

Continue reading “How Chinese scientists used a supercomputer to solve the ancient puzzle called the Three Body Problem” »

For the first time, scientists have witnessed the cataclysmic crash of two ultra-dense neutron stars in a galaxy far away, and concluded that such impacts forged at least half the gold in the Universe.

Shockwaves and light flashes from the collision travelled some 130 million light-years to be captured by Earthly detectors on August 17, excited teams revealed at press conferences held around the globe on Monday as a dozen related science papers were published in top academic journals.

“We witnessed history unfolding in front of our eyes: two neutron stars drawing closer, closer… turning faster and faster around each other, then colliding and scattering debris all over the place,” co-discoverer Benoit Mours of France’s CNRS research institute told AFP.

Continue reading “Neutron star smashup seen for first time, ‘transforms’ understanding of Universe” »

The fifth observation of gravitational waves (GW) marks the beginning of a new era in astronomy. On August 17, 2017, the LIGO and VIRGO collaborations detected neutron stars merging for the first time and immediately alerted observatories around the world. In a matter of minutes the event had been located, another first for GW astronomy, and telescopes around the world begun studying it almost immediately.

The event observed, called GW170817, was produced in galaxy NGC 4993, located 130 million light-years from Earth. The gravitational signal was the strongest ever observed, lasting over 100 seconds, and it emitted a gamma-ray burst (GRBs), providing the first piece of evidence that GRBs are produced by neutron star collisions. It also provided the strongest evidence yet that neutron star mergers are responsible for the creation of the heaviest elements in the universe, like gold and platinum.

The importance of this observation cannot be understated. We are witnessing Galileo pointing the telescope up, or Henrietta Swann Leavitt working out the relation that will be used to measure cosmic distances. This observation brings a completely new dimension to astronomy. The seven papers published in Nature, Nature Astronomy, and Astrophysical Journal Letter are also record-breakers. They have over 45,000 authors – around 35 percent of all active astronomers in the world – who worked at the over 70 observatories that helped to make this discovery.

Continue reading “In A Historic Discovery, A Neutron Star Merger Has Been Observed For The Very First Time” »

Offering more details on the happenings in space, astronomers have revealed an unexpected discovery surrounding a certain dwarf planet that goes by the name of Haumea.

The planet, which sits on the edge of the solar system, has a ring roughly 70 kilometers wide, with a radius of 2,287 kilometers.

Continue reading “Getting in With the Big Guys: Scientists Find Kuiper Belt Object With Ring” »