Maybe You Really Can Use Black Holes to Travel the Universe


Can you really survive traveling through an enormous black hole? A team of physicists has been studying the notion. (Roen Kelly/Discover)

One of the most cherished science fiction scenarios is using a black hole as a portal to another dimension or time or universe. That fantasy may be closer to reality than previously imagined.

Black holes are perhaps the most mysterious objects in the universe. They are the consequence of gravity crushing a dying star without limit, leading to the formation of a true singularity – which happens when an entire star gets compressed down to a single point yielding an object with infinite density. This dense and hot singularity punches a hole in the fabric of spacetime itself, possibly opening up an opportunity for hyperspace travel. That is, a short cut through spacetime allowing for travel over cosmic scale distances in a short period.

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Activation of opioid receptor uncovered


The illustration shows the two new crystal structures of the delta-opioid-(DOP)-receptor in complex with two activating molecules (blue and orange). Morphine, a potent analgesic, is shown in yellow. Credit: © Katya Kadyshevskaya/University of Southern California

Together with colleagues from Shanghai, Brussels, Canada and the USA, researchers from the University of Bonn have uncovered the binding mechanism of an important pain receptor. The results facilitate the development of new active substances. The opioids used today to treat severe pain can be addictive and sometimes have life-threatening side effects. The results of this new research are published in the renowned journal Science Advances.

Read more. Click here.

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Remarkable New Theory Says There’s No Gravity, No Dark Matter, and Einstein Was Wrong


Gravity is something all of us are familiar with from our first childhood experiences. You drop something – it falls. And the way physicists have described gravity has also been pretty consistent – it’s considered one of the four main forces or “interactions” of nature and how it works has been described by Albert Einstein’s general theory of relativity all the way back in 1915. 

But Professor Erik Verlinde, an expert in string theory from the University of Amsterdam and the Delta Institute of Theoretical Physics, thinks that gravity is not a fundamental force of nature because it’s not always there. Instead it’s “emergent” – coming into existence from changes in microscopic bits of information in the structure of spacetime.

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A Tiny Worm Has Been Found Carrying New Antibiotic That Could Help Us Fight Superbugs


As the fight against antibiotic-resistant superbugs continues to get more dire, scientists may have found a new weapon for tackling some of the worst superbugs we know of: a new antibiotic called darobactin, which is able to take on gram-negative bacteria.

The hope is that darobactin can be developed into something suitable for humans – the first time such a leap would have been made from an animal microbiome – and give us new options for countering bugs that have developed antibiotic resistance.

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Roboethics: The Human Ethics Applied to Robots


Who or what is going to be held responsible when or if an autonomous system malfunctions or harms humans? 

In the 1940s, American writer Isaac Asimov developed the Three Laws of Robotics arguing that intelligent robots should be programmed in a way that when facing conflict they should remit and obey the following three laws: 

  • A robot may not injure a human being, or, through inaction, allow a human being to come to harm 

  • A robot must obey the orders given it by human beings except where such orders would conflict with the First Law

  • A robot must protect its own existence as long as such protection does not conflict with the First or Second Law

Isaac Asimov’s Laws of Robotics were first introduced in the short science fiction story Runaround, (PDF) published in the March, 1942 issue of Astounding Science Fiction. 

Fast-forward almost 80 years into the present, today, Asimov’s Three Laws of Robotics represent more problems and conflict to roboticists than they solve. 

Read more. Click here.

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Scientists Used IBM’s Quantum Computer to Reverse Time, Possibly Breaking a Law of Physics


The universe is getting messy. Like a glass shattering to pieces or a single wave crashing onto the shore, the universe’s messiness can only move in one direction – toward more chaos and disorder. But scientists think that, at least for a single electron or the simplest quantum computer, they may be able to turn back time, and restore order to chaos. This doesn’t mean we’ll be visiting with dinosaurs or Napoleon any time soon, but for physicists, the idea that time can run backward at all is still a pretty big deal.

Normally, the universe’s trend toward disorder is a fundamental law: the second law of thermodynamics. It says more formally that any system can only move from more to less ordered, and that the chaos or disorder of a system – its entropy – can never decrease. But an international team of scientists led by researchers at the Moscow Institute of Physics and Technology think they may have discovered a loophole.

Read more. Click here.

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