An Earth-like planet confirmed by Nasa in the habitable zone around the Kelper-186 star has 'potential' to host liquid water - one of the pre-requisites for life as we know it to exist.
Nasa research scientist Tom Barclay has said that the hopes of the Kelper team have been answered with the discovery of Kepler-186f.
The discovery of the Earth-like planet orbiting star Kepler has demonstrated the existence of planets that could potentially hold life.
Lewis Vaughan Jones reports:
Nasa have announced official confirmation of the first Earth-like planet orbiting in the habitable zone of another star.Read the full story ›
Scientists scouring the sky have discovered an 'Earth-like' planet in the habitable zone.
The new planet, dubbed Kepler-186f, was discovered using NASA's Kepler telescope, which was launched in March 2009 to search for Earth-sized planets in our corner of the Milky Way Galaxy.
A habitable zone planet orbits its star at a distance where any water on the planet's surface is likely to stay liquid. Since liquid water is critical to life on Earth, many astronomers believe the search for extraterrestrial life should focus on planets where liquid water occurs.
"Some people call these habitable planets, which of course we have no idea if they are," astronomer Stephen Kane said. "We simply know that they are in the habitable zone, and that is the best place to start looking for habitable planets."
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An ocean of water that could support life lies under the surface of Saturn's tiny moon Enceladus, scientists have confirmed.Read the full story ›
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A new species of dinosaur described as Tyrannosaurus Rex's "smaller cousin from the north" has been discovered.
An analysis of 70-million-year-old fossilised skull remains discovered in northern Alaska has shown them to be from a new pygmy Tyrannosaurus, according to research published in the journal PLOS ONE.
In this graphic, A is the Nanuqsaurus hoglundi and B is the Tyrannosaurus Rex
Scientists examined fragments of the skull roof, maxilla and jaw, and concluded that the species, named Nanuqsaurus hoglundi, had an adult skull length of 25 inches (63.5 centimetres), less than half the size of the 60 inch (152.4 centimetre) skull of a T Rex.
A study that claims high-protein diets can be as bad as a 20-a-day smoking habit throws doubt over the long-term benefits of the popular Atkins diet and the Paleo diet.
Dr Valter Longo, Professor of Biogerontology at the USC Davis School of Gerontology, said:
People should understand the distinction and be able to make the decision about what they eat.
Some proteins are better for you than others, for example plant-based proteins like beans. Vegans seem to do better in studies than those who eat animal based proteins.
Red meat always comes out top as the worst and that's probably due to its other components.
But there is some good news according to Dr Longo who added, "There is no evidence that fish is bad for you".
A study that claims a high-protein diet can be as dangerous as smoking 20 cigarettes a day defined "high protein" as deriving at least 20% of daily calories from it.
The researchers recommend a middle-aged person consume around 0.8g of protein per kilogram of body weight, per day.
They said the most harmful are animal-based proteins such as:
- Red meat
A "low-protein" diet includes less than 10% of your daily calorie intake from protein.