Stephen Hawking has produced a "mind-bending" new theory that argues black holes do not actually exist - at least not in the way we currently perceive them.

Instead, in his paper, Information Preservation and Weather Forecasting for Black Holes, Hawking proposes that black holes can exist without 'event horizons', the invisible cover believed to surround every black hole.

During a previous lecture, 'Into the Black Hole', Hawkins described an event horizon as the boundary of a black hole, "where gravity is just strong enough to drag light back, and prevent it escaping".

"Falling through the event horizon, is a bit like going over Niagara Falls in a canoe", he said. "If you are above the falls, you can get away if you paddle fast enough, but once you are over the edge, you are lost. There's no way back.

"As you get nearer the falls, the current gets faster. This means it pulls harder on the front of the canoe, than the back. There's a danger that the canoe will be pulled apart. It is the same with black holes."

But now, Hawking is proposing 'apparent horizons' could exist instead, which would only hold light and information temporarily before releasing them back into space in 'garbled form', Nature has reported.

The internationally-renowned theoretical physicist suggests that quantum mechanics and general relativity remain intact, but black holes do not have an event horizon to catch fire.

For the foreseeable future, humans in space still means human bodies in space. And human bodies are crappy, ungainly skin bags prone to self-destruct mechanisms like cancer, heart disease, and depression. Sci-fi often suggests ways around this, usually involving some flawless robot doctor or health fixit pod ready to diagnose and repair just like that. In the real world, however, we aren't much better up there than we are down here, perhaps worse. During 1968's Apollo VII mission, for example, all three astronauts came down with fierce head colds, forcing a dangerous helmetless reentry and effectively ending the astronaut careers of all three.

A 2012 study found that of 106 flights and 742 crewmembers, there were 29 cases of infectious diseases being transmitted aboard spacecraft. The illnesses ranged from head colds to fungal infections to gastroenteritis. Note that there is no bedrest with chicken noodle soup and Netflix available on a multi-million dollar space mission.

As far as space dangers go, illness doesn't get much attention, which is kinda strange given that one of the most distinct effects of microgravity on the human body are tanking immune systems. A 2012 piece in Time reports, "the immune system can go on the fritz in space: wounds heal more slowly; infection-fighting T-cells send signals less efficiently; bone marrow replenishes itself less effectively; killer cells - another key immune system player - fight less energetically." Meanwhile, many pathogens have an awesome time in space, growing stronger and increasing their resistance to antimicrobials. In particular, both herpes and staph have been shown to thrive in the gravity-free, hyper-sterile environment of a space vessel.

Cosmos. Earth. Man.

Four weeks ago I ordered the book "Cosmos. Earth. Man" by A. G. Parkhomov[1]. Two days ago it arrived from Moscow.

I was excited. I started reading it right away.... the last chapter first. Actually, I read the back cover first, so let me quote from that so you'll have an idea of where we might be going today.

Aleksandr Georgievich Parkhomov (Александр Георгиевич Пархомов) completed his education at the Moscow Engineering Physics Institute. He then worked at the Division of Radiation Physics of this institute. He directed the research group investigating of the properties of ultra-weak neutrinos at the Moscow Aviation Institute. He is Professor of the International Slavic Academy, Head of the Laboratory ''Rhythms and Fluctuations" of the Institute for Time Nature Explorations and author or co-author of more than 130 scientific publications.

Parkhomov's scientific career is very different from my own. He is mainly an experimental physicist, dealing first of all with facts and data and trying to understand them using the simplest possible explanations. Only when they fail would he then look for more sophisticated explanations. He has almost twice as many scientific publications as I do! And yet, in spite of these differences there is something that we both share: scientific curiosity that drives one to seek scientific explanations of the unexplained. That is what I was always looking for: the high-level scientific research into "paranormal" stuff. That is why I started reading his book from the last chapter, Ch. 4, entitled "Where physics is powerless". He has done what I always wanted to do (but never did): real, first-hand research, rather than just speculations.

The first three chapters of the book deal with those phenomena where physics still has something to say, some explanatory ability: all kinds of radiations and their strange properties, radioactivity, electronics, physical and chemical reactions of biological systems, noise, information, dark matter and dark energy, neutrinos etc.; all relatively normal. But the last chapter describes his experimental research into "psychic" phenomena. It also describes his conclusions.

So, let me start with a description of just one type of experiment that needed to be done at the early stage of this research, probably the least spectacular.

A European spacecraft circling Venus has captured high-resolution images of strange waves in the clouds whirring above Earth's nearest neighbor. These ripples could help scientists understand how Venus' hellish surface shapes its atmosphere.

On Venus, mountains and volcanoes rise above vast lava plains and temperatures are hot enough to melt lead. But this hostile landscape is largely obscured by the planet's dense, toxic atmosphere with clouds blown by winds up to 186 to 248 mph (300 to 400 km/h).

The European Space Agency's Venus Express snapped images of gravity waves in those clouds. Not to be confused with ripples in space and time known as gravitational waves, the gravity waves in a planet's atmosphere can occur when winds whip over geological features like a mountain's face or crater wall and the updraft rises and sinks in a layer of stable air above. Condensation in the rising air can produce clouds, creating a pattern of waves moving in the same direction, spaced at regular intervals.

Scientists looking at Venus Express data confirmed that gravity waves in Venus' clouds are concentrated near the planet's high northern latitudes, especially above Ishtar Terra, one of two continental landmasses on Venus, which is about the size Australia. These patterns occur in the planet's uppermost clouds, some 37 to 43 miles (60 to 70 km) high.

"We believe that these waves are at least partly associated with atmospheric flow over Ishtar Terra, an upland region which includes the highest mountains on Venus," researcher Silvia Tellmann of the University of Cologne said in a statement from ESA. "We don't yet fully understand how such topographic forcing can extend to high levels, but it seems likely to be one of the key processes for the generation of gravity waves at high northern latitudes on Venus. The waves may form when a stable air flow passes over the mountains."

The New Madrid fault zone in the nation's midsection is active and could spawn future large earthquakes, scientists reported Thursday.

It's "not dead yet," said U.S. Geological Survey seismologist Susan Hough, who was part of the study published online by the journal Science.

Researchers have long debated just how much of a hazard New Madrid (MAD'-rihd) poses. The zone stretches 150 miles, crossing parts of Arkansas, Illinois, Indiana, Kentucky, Mississippi, Missouri and Tennessee.

In 1811 and 1812, it unleashed a trio of powerful jolts - measuring magnitudes 7.5 to 7.7 - that rattled the central Mississippi River valley. Chimneys fell and boats capsized. Farmland sank and turned into swamps. The death toll is unknown, but experts don't believe there were mass casualties because the region was sparsely populated then.

Nasa has reactivated a space telescope only to discover three new, "coal black" asteroids near to the Earth. The re-awoken Wide-field Infrared Survey Explore telescope (NeoWise), which entered hibernation in early 2011, has detected 857 "minor bodies" in our Solar System in 25 days, Nasa said. They include four comets, and 22 Near Earth Objects (NEOS), of which three are large asteroids "hundreds of meters in diameter and black as coal".
So far there is no indication that any of those asteroids will hit the Earth any time soon - but it is a reminder that there are still many, many things in nearby space that we either haven't seen, or haven't measured. NeoWise gives Nasa the ability to measure the position and brightness of objects in the Solar System in a more precise and complete manner than previously.

Nasa said that of the 10,500 NEOs so far known about, only 10% have been measured. NeoWise will double that number to about 20%. Better, but probably not that reassuring in the long run. Still, it's a start. Head over to Nasa for more details about the NeoWise mission.

The origin of life is often attributed to luck or labeled as some kind of miracle, but one physicist believes that under the right conditions the creation of life is predictably unavoidable.

According to Jeremy England, an assistant professor at the Massachusetts Institute of Technology, matter naturally reorganizes itself to acquire the crucial physical characteristic of life - the ability to disperse great quantities of energy - when driven by an outside source such as the sun and bathed in the right atmospheric or oceanic conditions.

As the 31-year-old physicist explained to the science publication Quanta Magazine, if that's the case, if matter consistently changes to disperse more and more energy, then the existence of life "should be as unsurprising as rocks rolling downhill."

"You start with a random clump of atoms, and if you shine light on it for long enough, it should not be so surprising that you get a plant," England said.

The new theory posits that matter is most likely to react to the external energy sources that are bearing down on it. If a particular energy source is constantly surrounding a group of atoms, over time they will inevitably restructure themselves to better consume and disperse the energy around them. This process, England proposes, is the driving force that ultimately led to life.

Oh, that's why it's called the Dark Ages

General consensus is that the Dark Ages were the worst of all the ages. Unicorns went extinct, you were either a witch or had the plague, and oh yeah, winter lasted for ten years once.

A recent article in New Scientist is giving some scientific validity to the big chill recounted in ancient medieval texts such as this one:

"And it came about during this year that a most dread portent took place. For the sun gave forth its light without brightness, like the moon, during this whole year, and it seemed exceedingly like the sun in eclipse, for the beams it shed were not clear nor such as it is accustomed to shed" - Procopius (Wars, 4.14.5)

Our most common male ancestor walked the earth 209,000 years ago - earlier than scientists commonly thought - according to new research from the University of Sheffield.

The pioneering study, conducted by Dr Eran Elhaik from the University of Sheffield and Dr Dan Graur from the University of Houston, also debunked the discovery of the Y chromosome that supposedly predated humanity.

In the new research, published in the European Journal of Human Genetics, Dr Elhaik and Dr Graur used conventional biological models to date our most common male ancestor 'Adam' in his rightful place in evolutionary history. The ground breaking results showed that this is 9,000 years earlier than scientists originally believed.

Their findings put 'Adam' within the time frame of his other half 'Eve', the genetic maternal ancestor of mankind. This contradicts a recent study which had claimed the human Y chromosome originated in a different species through interbreeding which dates 'Adam' to be twice as old.

Debunking unscientific theories is not new to Dr Elhaik. Earlier this year he debunked Hammer's previous work on the unity of the Jewish genome and together with Dr Graur they refuted the proclamations made by the ENCODE project on junk DNA.

An exploding star has suddenly appeared in the night sky, dazzling astronomers who haven't seen a new supernova so close to our solar system in more than 20 years.

In just the last few days, a the supernova emerged as a bright light in Messier 82 - also known as the Cigar Galaxy - about 12 million light-years away in the constellation Ursa Major, or the Great Bear. The supernova, which one astronomer described as a potential "Holy Grail" for scientists, was first discovered by students at the University College London.

Positioned between the Big Dipper and the Little Dipper, the new supernova should be easy for skywatchers in the Northern Hemisphere to spot; it may even brighten enough to be visible through a small pair of binoculars, said astronomer Brad Tucker, of the Australian National University and the University of California, Berkeley. Beyond creating a skywatching spectacle, the cosmic event may also afford astronomers a rare opportunity to study an object that might help them understand dark energy.