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Life

— Space

Is ET dead – and are we next?

With the number of potentially habitable exoplanets in our galaxy alone estimated to be in the billions, many wonder why we are yet to see signs or hear from intelligent alien life. A pair of astrobiologists from the Australian National University (ANU) Research School of Earth Sciences hypothesize the reason may be that ET could be long dead. According to Aditya Chopra and Charley Lineweaver, conditions on young planets are so volatile that if life doesn't evolve fast enough to stabilize the environment, it will quickly become extinct.

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— Space

Mars Reconnaissance Orbiter detects impact glass

NASA's Mars Reconnaissance Orbiter (MRO) has detected deposits of impact glass on the Red Planet that may provide a fresh avenue for investigating the question of whether life ever existed there. The hope is that glass forged in the intense conditions created by an asteroid impact may have preserved microscopic signs of life, as it has here on Earth.

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— Science

Frankenstein's simulated worm is alive?

The OpenWorm project is aimed at creating the first artificial lifeform – a bottom-up computer model of a millimeter-sized nemotode, one of the simplest known multicellular organisms. In an important step forward, OpenWorm researchers have completed the simulation of the nematode's 302 neurons and 95 muscle cells and their worm is wriggling around in fine form.

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— Space

Curiosity dates rock, finds potential good news for astronauts and search for life

The chances of life having once existed on Mars got a boost this week alongside good news for astronauts on any future expeditions to the Red Planet. Six papers from Curiosity team members presented to the autumn meeting of the American Geophysical Union in San Francisco revealed that they had directly dated their first Martian rock, gave details of an ancient lake where life may once of existed, and found new evidence about the radiation hazards that explorers and colonists may one day face. Read More
— Science

Space sugar may shed light on how life evolved on Earth

Using the latest-generation Atacama Large Millimeter Array (ALMA), which is an advanced system of 64 radio-telescope antennas in northern Chile, scientists at the European Southern Observatory have discovered a simple form of sugar orbiting a small binary star. Known as 16293-2422, that star is only 400 light-years away, and has about the same mass as the Sun. The finding could shed light on how the building blocks of life can originate spontaneously in deep space, even without a planet to support them. Read More
— Science

Scientists make first step towards bringing life to inorganic matter

All life on Earth is carbon-based, which has led to the widespread assumption that any other life that may exist in the universe would also be carbon-based. Excluding the possibility of elements other than carbon forming the basis of life is often referred to as carbon chauvinism and researchers at the University of Glasgow are looking to overcome this bias and provide new insights into evolution by attempting to create “life” from carbon-free, inorganic chemicals. They’ve now taken the first tentative steps towards this goal with the creation of inorganic-chemical-cells, or iCHELLS. Read More
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