So who will have the honour of being the first Singaporean in space?
Singapore will apparently find out in February. Mr Lim, together with a group of several individuals including Captain Mok Hin Choon, president of the Air Line Pilots Association Singapore, and former Nasa engineer Timothy Kauffman, are whittling down the candidates.
Captain Mok, 60, says: "I was so excited when I heard about it that when I first got the call I wanted to apply. If only I was 30 years younger.
He thought that a Singaporean going up into space was inevitable.
He said: "But I didn't know it could happen this fast."
Mr Lim says there have been 150 applicants and 90 per cent of them are pilots with Singapore Airlines.
Applicants should possess at least a pilot's licence.
Mr Lim says: "We want to talk to as many people as possible before whittling down. While physical and mental well-being are important, we are looking for someone with heart."
He also hints that Singapore may have a part in choosing the final one. "Think of it as an American Idol type of vote," he says.