Immortal

Set in modern day UK the premise is that humanity having had no contact with any alien species before receives a radio message from approaching aliens (the Ankor). They warn Earth that a huge supernova blast is going to hit within two years and this will be an extinction level event. However it can be averted. The Ankor are prepared to save humanity but every space faring nation will need to send a defined set of materials into orbit from which the Ankor will fashion a shield that will protect Earth from the incoming gamma ray blast. Humanity has no way of knowing whether the Ankor are telling the truth but the alien technological superiority is undisputed and humanity feel they have nothing to lose by cooperating...Minor Spoiler (albeit this is obvious after a few chapters) - the aliens have evil intentions and have recruited a human to support them from Earth but they are also factionalised with two alien teams each having different approaches: one has a moral code that tries to minimise human suffering the other is happy for humanity to pay any priceSub-Plots / TropesStrong female lead - Sam is one of two protagonists who is disabled due to a car accidentLove interest - there is no sexual content in the book but there a love triangle of which one member (Charlie) is in league with the alien powerData privacy - the human villain has devised a way to collect enormous amounts of personal data from humans that the aliens use to their advantageTranshumanism - the aliens have found a way to thoroughly integrated biological and technological components they have enormously long lives and brain power beyond humanitys imaginationSimulation Theory - the aliens belief system is based around the concept that the whole of our universe is a computer programme running in a higher dimensional universe