Hulleye Comes By!

Being woken in the dead of night by noisy neighbours blasting out music could soon be a thing of the past.

Scientists have shown off the blueprint for an “acoustic cloak”, which could make objects impervious to sound waves.

The technology, outlined in the New Journal of Physics, could be used to build sound-proof homes, advanced concert halls or stealth warships.

Scientists have previously demonstrated devices that cloak objects from microwaves, making them “invisible”.

“The mathematics behind cloaking has been known for several years,” said Professor John Pendry of Imperial College London, UK, an expert in cloaking.

“What hasn’t been available for sound is the sort of materials you need to build a cloak out of.”

Scientists confirm that parts of earliest genetic material may have come from the stars.

The finding suggests that parts of the raw materials to make the first molecules of DNA and RNA may have come from the stars.

The scientists, from Europe and the USA, say that their research, published in the journal Earth and Planetary Science Letters, provides evidence that life’s raw materials came from sources beyond the Earth.

The materials they have found include the molecules uracil and xanthine, which are precursors to the molecules that make up DNA and RNA, and are known as nucleobases.

The team discovered the molecules in rock fragments of the Murchison meteorite, which crashed in Australia in 1969.

They tested the meteorite material to determine whether the molecules came from the solar system or were a result of contamination when the meteorite landed on Earth.

The analysis shows that the nucleobases contain a heavy form of carbon which could only have been formed in space. Materials formed on Earth consist of a lighter variety of carbon.