Category: Geology

This image displays a region in the Milky Way at a distance of about 5,000 light years, where stars which have recently formed in clouds of gas and dust are still heavily obscured. The diffuse radiation is a mixture of starlight scattered by the dust and gas in the area, and atomic and molecular hydrogen line emission. Photo: ESO

The first migrant

Was the first migrant a bacterium from outer space? A bacterium which hid inside a meteorite and brought life to earth more than 3.5 billion years ago? The “seed from space” or panspermia theory has been around since Antiquity and is still discussed among astrobiologists in the scientific search for...