The comet that sailed by Mars last month spawned thousands of shooting stars per hour and created a new layer of ionized particles high in the planet's atmosphere, NASA scientists said on Friday.
The e-commerce market in the country is expected to grow 37 per cent to reach $20 billion by next year on the back of growing internet population and increased online shoppers, a report has said.
The doodle features the people of West Berlin greeting their eastern counterparts on the night of November 9, 1989 and the pieces of the fallen Wall put up in different parts of the world.
In 1839, amateur chemist and photography enthusiast Robert Cornelius, then 30 years old, had created what is believed to be the first photographic self-portrait.
The micro-blogging site has launched a tool that will allow women to report abuse and harassment on Twitter and get the issue resolved within 24 hours.
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