g ABODES - A shower of millions of rocks from space that collided with Mars, the Earth, and the moon about four billion years ago could have warmed our planet and made it wetter, say researchers. That's what scientists found when they heated ancient rocks like those that hit the Earth billions of years ago and measured the carbon dioxide and water that was released, according to a study published in the journal Geochimica et Cosmochimica Acta. See article.
g LIFE - A great deal of money and effort have gone into searching for life on other worlds. But what a second genesis of life, a type of life unrelated to DNA-based life, is here on Earth? Paul Davies urges the scientific community to take a look. See article.
g COSMICUS - Scientists have developed a new cleaning protocol for space hardware, such as the scoops of Mars rovers, which could be used on future "Search for Life" missions on other planets. See article.
g IMAGINING - Looking for some classic science fiction alien movies? There's a fairly exhaustive list, with brief explanations of each, here. Now in how each one the aliens really are just mythical monsters that play on human psychology (specifically fear or revulsion). Such films really say less about the evolution of potential extraterrestrial lifeforms and civilizations than about the evolution of human beings and our culture. In fact, here's an essay that examines a specific detail of that notion: "An Exploration of the Relationship Between Science Fiction Film and the UFO Mythology".