General Awareness

SCIENCE & TECHNOLOGY - October 2015

Oct 2015

Oct 29, 2015

Oxygen on Comet

Scientists announced the unexpected discovery of large quantities of oxygen on a comet which streaked past the sun in August.
Measurements suggested that oxygen molecules in the comet's gassy halo must have existed before or at its formation.
The comet is being tracked on its deep space journey around the Sun by the European Space Agency's Rosetta spacecraft.

Oct 28, 2015

Lighter, Long-lasting Batteries from Silicon

Researchers have developed a new silicon-based anode that could pave the way for lighter and long-lasting lithium-ion batteries which could be used for everything.
The new silicon battery technology promises a 40 to 60 per cent increase in energy density, which is important for consumers.
The technology could allow an electric car to be driven up to 500 kilometres between charges.
Current lithium-ion batteries normally use graphite anodes.

Oct 26, 2015

New Methane Organisms Discovered

Scientists have discovered two new methane-metabolizing organisms whose role in greenhouse gas emissions and consumption is not yet known.
Traditionally, these types of methane-metabolising organisms occur within a single cluster group of microorganisms called Euryarchaeota.

Oct 19, 2015

NASA Spacecraft Spots Giant Hole in Sun

NASA's orbiting Solar Dynamics Observatory has mapped an enormous coronal hole, a gap in the sun's outer layer and magnetic field, which is the size of 50 Earths and is releasing an extra-fast solar wind in Earth's direction.
The gap in the Sun's magnetic field lets out a stream of particles travelling at up to 800 kilometres per second.
If aimed toward Earth, it could result in a geomagnetic storm, a phenomenon that can affect power and navigation for satellites orbiting the Earth as well as radio communication.

Oct 18, 2015

Scott Kelly Longest-living US Astronaut in Spaace

US astronaut Scott Kelly, commander of the current Expedition 45 crew on the International Space Station, has become the longest-living US astronaut on the orbiting laboratory.
Kelly crossed 383 days living in space, surpassing US astronaut Mike Fincke’s record of 382 cumulative days.
Later this month, Kelly will break another record on his 216th consecutive day in space, when he will surpass astronaut Michael Lopez-Alegria’s record for the single-longest spaceflight by an American. Lopez-Alegria spent 215 days in space as commander of the Expedition 14 crew in 2006.

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