Virgin Galactic's SpaceShipTwo takes one giant leap towards space tourism
4th May 2013 | 11:00
To infinity and beyond?
Space came just a little bit closer for the everyman this week, as Virgin Galactic's ship made one 1,470kph-leap towards space in its first successful flying rocket test.
If that wasn't enough, we've also seen the beautiful, but incredibly deadly, storms at Saturn's north pole for the first time, and found a potential cure for diabetes. All that and more in another exciting Week in Science.
SpaceShipTwo breaks the sound barrier -- Things in the space tourism industry just got interesting. In its first proper rocket-powered test flight, Virgin Galactic's SpaceShipTwo underwent a 16-second burn propelling it to an altitude of 16.7km at some 1,470kph, just bre'aking the sound barrier, before making a smooth and controlled landing. According to Virgin's Richard Branson, the successful test clears the way for the very real goal of suborbital, edge-of-space tourist trips before the year is out.
SpaceShipTwo will eventually burn for 70 seconds propelling six passengers and two pilots up to an altitude of 100km, or the edge of space, giving passengers 5 minutes of weightlessness for a mere $200,000 a flight. [Virgin Galactic]
New liver hormone might 'cure' diabetes -- Diabetes is one of the biggest problems of modern developed-world life. Both sugar-rich diets and old age bring with it risk of developing diabetes and being stuck injecting insulin for the rest of your life. Now a new hormone found in the liver could be a cure, as it has the ability to spur growth of insulin-secreting cells in the pancreas.
Betatrophin was found to vastly increase the production of pancreatic Î² cells -- the ones responsible for secreting insulin into your blood -- in mice. A monthly, or possibly yearly injection of betatrophin could be enough to prevent the need for daily insulin injections in type-2 diabetes sufferers, and could even help patients with type-1 too. The best thing about betatrophin as a possible treatment would be the fact that the patients would be induced into producing their own insulin, which would reduce complications and make diabetics' blood glucose levels much more stable. [Cell]
Saturn's massive cyclone puts Earth's hurricanes to shame -- For sheer size and violence, Saturn's enormous cyclone spinning around the planet's northern pole totally surpasses even Earth's most destructive hurricanes. It's over 2,000km wide, with wind speeds of 500kph, making it 30 times larger and twice as fast as even the Category 5 beasts back here on Earth. However, it is also absolutely stunning, as captured by NASA's Cassini spacecraft. Immense destructive power has never looked so beautiful. [NASA]
[Image credit: NASA]
Smoking shisha is much, much worse than cigarettes -- Smoking flavoured tobacco and fruit mixtures through water pipes has become commonplace in certain types of bars across the UK and US. Stemming back 100s of years ago in India, the Middle East and North Africa, the tradition of smoking through water pipes is often thought of as safe.
However, new research points to the exact opposite, as the water pipes deliver more carbon monoxide and carcinogens into the smokers' lungs than traditional cigarettes. The extremely harmful chemicals were found in higher quantities in both the smoke and the smokers' bodies. In fact, researchers found three sessions of shisha, or hookah as it is also known, was worse for you than smoking 11 cigarettes a day. [CEBP]
[Image credit: seansharifi via Flickr]
Gene therapy is go for heart-failure treatment -- A clinical trial containing more than 200 people with heart failure is about to kick off with a new form of gene therapy. By dosing the patients with a virus that injects a gene called SERCA2a into the heart, researchers hope to repair the damaged heart tissue. The inserted gene will reset the control of calcium in broken hearts, helping them to beat correctly again. Having been successful in previous smaller trials, the pioneering technique could provide a partial fix for heart failure, and give suffers a modicum of a normal life without the need for a heart transplant. [New Scientist]
Master gene controls what your brain looks like -- Researchers have found a master gene that seems to control the look and structure of your grey matter. The gene TRNP1 controls the expansion and proliferation of stem cells in the brain. Either the cells expand and create a balloon-like structure, or compress and fold into the complex and dense structures found in the human brain.
Inhibition of the gene seems to create more complex brain structures, leading to the hypothesis that these structural differences allow for higher-level brain function in humans when compared to animals. By artificially varying the level of expression of the gene in mice, researchers found structures develop similar to those found in the human brain. This surprising find could shine a light on brain structure-based diseases and possibly offer treatment for things like autism and epilepsy, which are caused by abnormal brain development. [Cell]
[Image credit: micahb37 via Flickr]
Mind-reading tattoo could also monitor your baby bump -- A new electronic tattoo has been developed that is capable of reading complex brain activity similar to an EEG, and could have applications for monitoring the developing foetus in the mother's womb. The temporary tattoo can be applied to your forehead to measure things such as focus or other complex brainwave patterns.
With some optimisation, the same tattoo could also be used to monitor the growth and development of babies in the womb, allowing real-time feedback on the health of your future little sprog. Having fine-tuned the tattoo, and managed to manufacture it with mass-produced components, which makes it cheap, the next stage is to make the data transmission wireless. In a few years we could all be wearing patches to monitor our thoughts, which is either a fantastic or scary proposition, depending on how you look at it. [New Scientist]
Converting white fat to brown fat could make you thin -- There are two types of fat cells in your body: White fat is the traditional fat you know and love, storing energy to be burnt when you run dry of glucose and glycogen. That's the fat that you put on and plagues the obese. Then there's brown fat, or brown adipose tissue, which is responsible for maintaining body temperature, burning energy to produce heat. We form small deposits of brown adipose within white fat depots in response to colder climates, helping maintain our constant 37 degrees Celsius body temperature.
[Image credit: puuikibeach via Flickr]
Now researchers have discovered that fat cells have the ability to convert white fat into brown adipocytes. Although the mechanism isn't yet fully understood, this fat conversion could be used to help obese people, converting their large deposits of white fat into brown adipose tissue and burning the excess energy off as heat. More research into the specifics of this cellular conversion are needed, but researchers seem positive that a technique like this could be used to literally heat yourself thin. [Nature Cell Biology]