Space Connection

Young visitors leave their home planet as children and arrive at Earth looking for mates as they are now nineteen to twenty-one years old. Life on Earth is very different to life on the planet they came from and in the eagerness to find mates they make many mistakes. The story centers on Captain Jo-Dan who becomes Jordan on Earth and the love that develops between her and Teddy. Teddy's mother doesn't approve and then Jordan becomes pregnant with twins. The giant brain on the spacecraft that shuttled them to Earth known as 'Mother' is supposed to self destruct but instead holds Jordan as a hostage. A space shuttle is sent to investigate and is captured. The visitor craft expels the shuttle and then disappears - what has happened to Jordan, Teddy, and the twin babies?