mrt 062013
 
Evidence that Comets could have Seeded Life on Earth

  It’s among the most ancient of questions: What are the origins of life on Earth?   A new experiment simulating conditions in deep space reveals that the complex building blocks of life could have been created on icy interplanetary dust and then carried to Earth, jump-starting life. An image of Halley’s Comet taken in [continue reading]

mei 312012
 
Methane On Mars Does Not Indicate Life

Intense UV radiation on the red planet releases methane from organic materials which meteorites transport onto its surface. Methane concentration on Mars: The graphics shows the calculated methane concentrations in parts per billion (ppb) on Mars during the summer in the northern hemisphere. Violet and blue indicate small methane, red areas indicate large amounts. Credit: [continue reading]