Posts tagged Space

'Alien Bugs' Discovered In Earth's Atmosphere

Scientists Develop Invisibility 'Time Cloak' to Hide Data

We’ve heard of invisibility cloaks, but scientists now claim to have developed a time cloak, that completely eliminates an event from history.

Experiment to Test if We're Living in a Simulation: Constraints on the Universe as a Numerical Simulation

Scientists have devised a way to test the simulation argument that states there is a strong likelihood we are living in a simulation.

Observable consequences of the hypothesis that the observed universe is a numerical simulation performed on a cubic space-time lattice or grid are explored. The simulation scenario is first motivated by extrapolating current trends in computational resource requirements for lattice QCD into the future. Using the historical development of lattice gauge theory technology as a guide, we assume that our universe is an early numerical simulation with unimproved Wilson fermion discretization and investigate potentially-observable consequences. Among the observables that are considered are the muon g-2 and the current differences between determinations of alpha, but the most stringent bound on the inverse lattice spacing of the universe, b^(-1) >~ 10^(11) GeV, is derived from the high-energy cut off of the cosmic ray spectrum. The numerical simulation scenario could reveal itself in the distributions of the highest energy cosmic rays exhibiting a degree of rotational symmetry breaking that reflects the structure of the underlying lattice.

Source

NASA's advice for near-term meteor strike: "Pray"

Interesting article on the implications of any ‘small’ meteors approach Earth

At a House Committee hearing Tuesday, NASA administrator Charles Bolden Jr. was asked what America would do if a meteor similar to the one that hit in Russia on Feb. 15 was found to be on a path toward New York City, with impact three weeks away. His response? “Pray.”

At the moment, we might be lucky to get even three weeks warning. The United States and the rest of the world simply do not have the ability to detect many “small” meteors like the one that exploded over Russia, which has been estimated at roughly 55 feet long. Donald Yeomans, Manager of NASA’s Near-Earth Object Program Office and the author of “Near-Earth Objects: Finding Them Before They Find Us,” told CBSNews.com that there are a lot of these small meteors in orbit, and little early warning system in place to detect them.

Yeomans said the most efficient way to find them would be a space-based infrared telescope. This has two benefits: One, the sun would not serve to prevent detection of some objects, and two, the infrared nature of the telescope would mean it would be effective in detecting them. (Part of the reason there was no warning for the Russia meteor is that the sun blinded the satellites.) CBS News contributor and City University of New York physics professor Michio Kaku calls such a telescope a “no brainer,” in part because it comes at the relatively low cost of a few hundred million dollars.

Mars One Introduction Video

James Cameron Reveals the Details of His Space Venture

Cameron and other high-profile venture capitalists want to mine metal from asteroids.

Last week, filmmaker James Cameron—along with co-investors Larry Page and Eric Schmidt—announced the group would soon be launching a company that would venture beyond Earth to find natural resources.

Today, the company—Planetary Resources—revealed the company’s eye-popping plans. In a plan that seems like it was lifted out of a science fiction film, the company plans to mine metals from asteroids. (Cameron first dabbled with the concept in his blockbuster film Avatar.)

What it feels like to fly over planet Earth

Elon Musk: Humans should be 'multi-planet species'

davidkarle:

SpaceX founder Elon Musk has a goal for humans in the next several decades: establish a colony on Mars.

The human race is just a chemical scum on a moderate-sized planet, orbiting around a very average star in the outer suburb of one among a hundred billion galaxies. We are so insignificant that I can’t believe the whole universe exists for our benefit. That would be like saying that you would disappear if I closed my eyes.
Stephen Hawking