Voyager 40th anniversary

Nearly 40 years ago, on 20 August 1977, the Voyager 2 space probe was launched from Cape Canaveral, Florida, on a mission to study the Solar System's four outermost planets. It was followed 15 days later by the launch of an identical spacecraft, Voyager 1. The Voyager spacecraft -Image from NASA Although Voyager 1 was… Continue reading Voyager 40th anniversary

The zoo hypothesis

This post is about the zoo hypothesis, a term coined in 1973 by the astronomer John Ball, but the idea had been in existence for decades before then.  The zoo hypothesis states that there are many advanced and intelligent alien civilisations out there, but they hide their existence from us so that they they do not interfere with our… Continue reading The zoo hypothesis

New Horizons

On 14 July 2015 the New Horizons Spacecraft will fly past the dwarf planet Pluto which lies on the edge of our Solar System. This is the culmination of a nine and half year voyage which started when it was launched in back in January 2006. Artist's Impression of New Horizons passing Pluto - Image… Continue reading New Horizons

Artefacts From Earth

This is the final post in a series about human efforts to contact extraterrestrials.  Today I want to discuss the objects which have already been sent out into interstellar space in the hope that at some point in the distant future an alien civilisation will retrieve and decipher them. The Pioneer Plaque On 3 March 1972 Pioneer… Continue reading Artefacts From Earth