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Astronomers announced this week they found a water-rich and relatively nearby planet that's similar in size to Earth.

While the planet probably has too thick of an atmosphere and is too hot to support life similar to that found on Earth, the discovery is being heralded as a major breakthrough in humanity's search for life on other planets.

"The big excitement is that we have found a watery world orbiting a very nearby and very small star," said David Charbonneau, a Harvard professor of astronomy and lead author of an article on the discovery, which appeared this week in the journal Nature.

The planet, named GJ 1214b, is 2.7 times as large as Earth and orbits a star much smaller and less luminous than our sun. That's significant, Charbonneau said, because for many years, astronomers assumed that planets only would be found orbiting stars that are similar in size to the sun.

Because of that assumption, researchers didn't spend much time looking for planets circling small stars, he said. The discovery of this "watery world" helps debunk the notion that Earth-like planets could form only in conditions similar to those in our solar system.

"Nature is just far more inventive in making planets than we were imagining," he said.

In a way, the newly discovered planet was sitting right in front of astronomers' faces, just waiting for them to look. Instead of using high-powered telescopes attached to satellites, they spotted the planet using an amateur-sized, 16-inch telescope on the ground.

There were no technological reasons the discovery couldn't have happened long ago, Charbonneau said.

The planet is also rather near to our solar system -- only about 40 light-years away.

Planet GJ 1214b is classified as a "super-Earth" because it is between one and 10 times as large as Earth. Scientists have known about the existence of super-Earths for only a couple of years. Most planets discovered by astronomers have been gassy giants that are much more similar to Jupiter than to Earth.

Charbonneau said it's unlikely that any life on the newly discovered planet would be similar to life on Earth, but he didn't discount the idea entirely.

"This planet probably does have liquid water," he said.

http://www.independent.co.uk/news/world/middle-east/men-turn-tables-on-regime-by-donning-headscarves-and-dresses-1839889.html#

Hundreds of pictures of men in women's clothing have been posted online by Iranian opposition supporters in mockery of what they say is a crude attempt by the authorities to humiliate and discredit a reformist student leader by photographing him in a head scarf and chador.

The student, Majid Tavakoli, was arrested after he gave a speech urging fellow students at Amir Kabir university to reject "tyranny," in protests which swept the country last week. Iranian state media released photographs of Mr Tavakoli wearing a black chador, and a blue scarf around his unshaven face.

A statement claimed that he had dressed up in the all-encompassing chador, the dress favoured by the most devout Iranian women, to escape his campus after the speech but was caught by security forces.

In revenge, opposition groups flooded websites including Facebook with pictures of men wearing headscarves and chadors.

Men taking part in the "Be a Man" web campaign draped their heads with colourful scarves in hundreds of mocking self-portraits. Some were bearded, others smiled for the camera, while some covered their mouths. Many wore green, the adopted colour of the opposition and flashed "V for victory" signs.