Incoming Asteroid! is based on a project within ASTRA (the Association in Scotland to Research into Astronautics) to provide scientific answers to the question – what would we do if we knew there was going to be an asteroid impact in ten years' time or less? Clearly there are many things humanity can do nothing about, for example an unseen object traveling towards us so fast that we have no time to prepare, or an object so large it may be unstoppable.
A realistic hazard model was decided upon, and the scenario developed from that: an incoming object about 1 kilometer in diameter, in an orbit ranging from the outer rim of the Asteroid Belt to within that of Earth's. Three basic possibilities are considered in Incoming Asteroid!.
The first is the deflection of the asteroid, using remote probes along with a number of possible technologies to change the asteroid's course. Second is the attempt of a manned mission, in order to plant a propulsion system on the asteroid to push it into a different orbit. Third is the nuclear option, a last-ditch attempt to break up and then disperse the asteroid using nuclear weapons. (A rather impractical combination of these second and third options were used as the plot of the popular 1998 Bruce Willis feature film, Armageddon.)
Although the cost of developing the technology needed to protect the Earth would be substantial, there would certainly be spin-off benefits. These could eventually result in practical small-scale atomic energy sources, new propulsion systems that could make extraterrestrial mining within the solar system a possibility, and other as-yet unforeseen benefits. And finally, Incoming Asteroid! considers the political implications – how governments across the world should best react to the threat with a view to minimizing loss of life, and in the weeks running up to the possible impact, preventing panic in the population.
- Is There a Danger?
- A Designer Hazard
- Detection and Reaction
- Deflection - The First Scenario
- Second Scenario - Manned Mission
- Final Options
- The Starseeds Grow
- Keep Watching!
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Duncan Lunan, from Edinburgh, was educated at Marr College, Troon, and at Glasgow University, gaining an M.A. (Honors) in English and Philosophy, with Physics and Astronomy as supporting subjects. He holds a postgraduate Diploma in Education. He has been President of the Association in Scotland to Research into Astronautics (ASTRA) three times and has also been Vice-President, Secretary, and Treasurer at various times during 47 years on the society's council; he has been on the exhibitions and publications committees since 1970 and was Assistant Curator of Airdrie Public Observatory in 1987-98 and again in 2003-2008. With his wife Linda, he has launched a new organization to support newcomers to astronomy, Astronomers of the Future. In 1978-79, as Manager of the Glasgow Parks Department Astronomy Project, he designed and built the first megalithic observatory in Britain for 3,000 years; in 1990-91 he was Photo-Archivist for the Press Centre during Glasgow's year as European City of Culture; in 2006-2008 he was Manager of the North Lanarkshire Astronomy Project, organizing nearly 700 events including more than 450 school visits; otherwise has been a full-time writer since 1970.