“Life in the Universe – are the aliens really there”

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This lecture is presented on Zoom platform – advanced booking  required.  If you wish to attend but are not in a position to make a donation at this time please email admin(at)astronomy.ie

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While this is a FREE lecture Astronomy Ireland is a non-profit organisation we are heavily dependent on your generosity at all times but especially in these challenging times. Your donations help us to keep your interest in astronomy and space alive as well as presenting you with lots of interesting and up to date information and events.  If you would like to view the lecture but are not in a position to donate please email our admin team at admin(at)astronomy.ie who will add you to the lecture admittance list.

Presented on ZOOM 13th September at 7pm

DVD Available HERE



Introduction:  Why are we so interested in the subject of Alien Life? Our cultural background to this question; The Drake Equation Development of the Universe & our Galaxy. How we get to have the chemical materials and environment available for life to exist, including appropriately placed stars Local Astrophysical Requirements The need for stability.

What we’ve found with exoplanets; What sorts of stars are appropriate; The effect of the Moon; Bombardments and impacts. Early Biological needs

How quickly life arose on Earth; how complex life may have developed; biological and environmental constraints on its development

Planetary Stability and Environment: The Moon and Tides; Plate Tectonics; Temperature Stability (Snowball Earth); Major Volcanism; Impact Events.

Other Biological Phenomena: Why the ‘Cambrian Explosion’ was when it was; Mass Extinctions; Climatic Needs.

Likelihood of Complex Life Elsewhere: Back to the Drake Equation and review each of the terms.


ABOUT THE SPEAKER: James Fradgley, FRAS, BA in Physics and Astronomy, MSc., MInstP


James describes himself as more of a theoretician than a practical observational astronomer.  He gives many talks, mostly to astronomical societies.  He also always has had an interest in biology and genetics and was a field researcher for the Peppered Moth study under Kettlewell.

So he is coming at this subject with a sort of biological background as well.


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