Roll Over Einstein? Not so fast.


‘We tried to find all possible explanations for this,’ the report’s author Antonio Ereditato of the Opera collaboration told BBC News on Thursday evening. ‘We wanted to find a mistake – trivial mistakes, more complicated mistakes, or nasty effects – and we didn’t.
When you don’t find anything, then you say “well, now I’m forced to go out and ask the community to scrutinise this”.’

As broke everywhere last week, CERN appears to find evidence of neutrinos moving faster than light(!) — time travel possible which would, well, basically rewrite the laws of physics and make. (See what I did there? Anyway, kind of a big deal!)

Fermilab is currently trying to reproduce the results, but for now, the scientific community is, shall we say, skeptical. “Extraordinary claims require extraordinary evidence. I think it will be perceived in retrospect as an embarrassment that this claim received so much publicity–the inevitable consequence of posting a preprint on the Web.

Update: Sorry, aspiring Marty McFlys: As expected, rumors of relativity’s demise have been greatly exaggerated. Here’s the rub: “[T]he distance that the neutrinos had to travel in their reference frame is longer than the distance that the neutrinos had to travel in our reference frame, because in our reference frame, the detector was moving towards the source.” Thus, thte experiment “helps to reinforce relativity rather than question it.

Finds Along the Frontier.


In a teleconference, Kaltenegger said that the planet is at the warm edge of its star’s habitable zone, as if ‘standing next to a bonfire.’ That means the planet would require a lot of cloud cover — which reflects starlight — to keep the surface cool enough to prevent any water from boiling, she said.

Gliese 581g, meet HD85512b. Among the 50 new planets astronomers announced on Monday is a “Super-Earth” that lies within the inhabitable zone and could hold water. “The new super-Earth is 3.5 times the mass of Earth.

And, how are we going to get there, you ask? While DARPA works its mojo, NASA announces its most recent plans for a successor to the Shuttle: A new Space Launch System. “Administration officials said the new rocket system…would be the most formidable launch system deployed since the Saturn V…The new rocket coupled with a deep-space crew capsule already under development should enable an un-crewed test flight of the exploration system in 2017 and a crewed test flight by 2021, officials said.” If history is any guide, you’ll probably want to tack a few years on to those dates.

While we wait, here’s another interesting cosmic find to ponder: Astronomers have found an honest-to-goodness twin-sunned Tatooine in Kepler 16b, 200 light years away. “‘This is an example of another planetary system, a completely different type that no one’s ever seen before,’ Doyle said. ‘That’s why people are making a big deal out of this.’

For the Long Haul.


Look back 100 years. If you could have had James Clerk Maxwell and Guglielmo Marconi and Albert Einstein sit around a lunch table in the early 1900s, they would have had all the math necessary to create an iPhone. But there’s nothing that they could have done to characterize the integrated circuits, the satellites, the communication links or the Internet, to draw a plan that would have led them to an iPhone until Apple introduced it 100 years later. That’s how I see where we are with this.

From the folks who brought you the Internet, DARPA announces the 100-Year Starship Study, offering $500,000 in seed money to whomever comes up with the best plan for developing the technology needed for interstellar travel. “To stimulate discussion on the research possibilities, DARPA officials will hold a symposium that brings together astrophysicists, engineers and even sci-fi writers so they can brainstorm what it would take to make this starship enterprise a success.

Turn the Machines Back On!


“‘We’re not completely out of the woods yet, but everybody’s smiling here,’ the institute’s chief executive officer, Tom Pierson, told me today.Also in good space exploration news, SETI’s Allen Telescope Array is now back online thanks to a wave of private donations. “Among the contributors are Jodie Foster…science-fiction writer Larry Niven…and Apollo 8 astronaut Bill Anders…’It is absolutely irresponsible of the human race not to be searching for evidence of extraterrestrial intelligence,’ Anders wrote in a note accompanying his contribution.

A Light in the Deepest Dark.


‘We think there are only about 100 bright quasars with redshift higher than 7 over the whole sky,’ concludes Daniel Mortlock, the leading author of the paper. ‘Finding this object required a painstaking search, but it was worth the effort to be able to unravel some of the mysteries of the early Universe.’

European astronomers find the farthest quasar yet discovered, 12.9 billion light years away and dating to only 770 million years after the Big Bang. “This brilliant beacon, powered by a black hole with a mass two billion times that of the Sun, is by far the brightest object yet discovered in the early Universe.

The Wanderers.


So what makes the astronomers think these are free-floating planets, and not ones orbiting stars like Earth does? Well, the lensing events themselves show only a single rise and fall of the background starlight. If the planets were orbiting stars, those stars would also act like lenses, and their effect would be seen. They weren’t.

As explained by Discover‘s Phil Plait, a NASA-funded study using gravitational lensing finds possible evidence of billions of rogue planets wandering the cosmos between the stars. “In fact, these free-floaters may outnumber ‘regular’ planets by a factor of 1.5 or so. There are more of them than there are of us!…It’s thoughts that like which make me glad to be an astronomer, especially one living now. Just when you think the Universe is running low on surprises, it reminds us it’s a lot more clever than we are.

A Qward-er Hour of Science.


The ALPHA team want to keep antimatter intact long enough to study it, so last year they worked out how to hold a cloud of antihydrogen in a magnetic trap. Not for long, though: collisions with trace gases would have either annihilated the anti-atoms or given them the energy to escape, so the team opened the trap after 170 milliseconds and observed the resulting annihilations, verifying that antimatter had been made.

Building on the LHC’s success last November, scientists in Geneva, Switzerland manage to trap anti-matter for a full sixteen minutes, 10,000 times longer than ever before. “This time around, they used the same method but also cooled the antiprotons used to create the antihydrogen, which lowered the energy of the antimatter,but increased the chance that more could be collected.

Space-Time in a Bottle.


‘This is an epic result,’ adds Clifford Will of Washington University in St. Louis…’One day,’ he predicts, ‘this will be written up in textbooks as one of the classic experiments in the history of physics.’

Using “the most perfect spheres ever made by humans,” a NASA experiment known as Gravity Probe B finds evidence of space-time curvature, as Einstein predicted under general relativity. “Everitt recalls some advice given to him by his thesis advisor and Nobel Laureate Patrick M.S. Blackett: ‘If you can’t think of what physics to do next, invent some new technology, and it will lead to new physics. Well,’ says Everitt, ‘we invented 13 new technologies for Gravity Probe B. Who knows where they will take us?’

Silence will Fall.


‘There is a huge irony,’ said SETI Director Jill Tarter, ‘that a time when we discover so many planets to look at, we don’t have the operating funds to listen.’ SETI senior astronomer Seth Shostak compared the project’s suspension to ‘the Nina, Pinta and Santa Maria being put into dry dock.’…This is about exploration, and we want to keep the thing operational. It’s no good to have it sit idle.

Another casualty of the lousy economy and the budget crises (in this case, California’s) SETI’s Allen Telescope Array goes dark. “‘We have the radio antennae up, but we can’t run them without operating funds,’ he added. ‘Honestly, if everybody contributed just 3 extra cents on their 1040 tax forms, we could find out if we have cosmic company.‘”

My God, It’s Full of…Planets?


‘The fact that we’ve found so many planet candidates in such a tiny fraction of the sky suggests there are countless planets orbiting sun-like stars in our galaxy,’ said William Borucki of NASA’s Ames Research Center in Moffett Field, Calif., the mission’s science principal investigator. ‘We went from zero to 68 Earth-sized planet candidates and zero to 54 candidates in the habitable zone, some of which could have moons with liquid water.’

After its initial sweep of 1/400th of the sky, NASA’s Kepler telescope finds over 1200 planets — 54 of them potentially inhabitable. (The picture above is a rendering of the six-planet Kepler-11 system, 2000 light-years away.)

Discover‘s Phil Plait puts today’s findings in proper perspective: “Mind you, Kepler is only looking at a sample of stars that is one one-millionth of all the stars in the Milky Way. So it’s not totally silly to take these numbers and multiply them by a million to estimate how many planets there may be in the galaxy…70 million Earth-size planets, and a million in the habitable zone of their stars. A frakking million. In our galaxy alone.