In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012

In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive. Jakso 2 Kausi 1 Vuosi 2012

Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist? Jakso 1 Kausi 1 Vuosi 2012