2015-06-17 BBC:星光七纪元-43（在线收听）

 These are just the whole host of compounds we make. We found many of these compounds are very interesting because they play roles in life on earth. So, it’s clear we were making many the building blocks of life by these very processes that happened in space. These molecules might hold the secret to how life began on our planet. If they were part of the process, they would have to firstly get to earth. And scientists have found delivery system. This is the part of meteorite that crashed from outer space to earth in Australia. In it we found many of the organic compounds vital to life on our planet. These minute acids in this meteorite predict their arrival of this meteorite to the earth. So in fact the minute aids have been made in space and some environment. And so, the minute acids do exist out there in space and they do get delivered to planets. Perhaps life didn’t have to start from scratch here on earth. Could building blocks have been scattered from space. We don’t really know if the original life on earth owes existence to these kinds of materials being delivered from the space because we really don’t understand how life got started. However, the analogue I will use is that if you are trying to build a Lego castle, it’s probably a lot easier if the Lego falls out of the sky on you than if you have to actually build the Lego blocks from the scratch, and then make your Lego castle. And if those Lego pieces were available to earth, they could be available to planets orbiting other stars. Or, given that we know, just about anywhere when you were making this stars actually and you can make these Lego blocks, and facts are there a huge number of environments for this Lego blocks to be delivered. I personally would be quite surprised there isn’t other life out here.