Researchers prepare pairs of matter and anti-matter particles in a bid to finally resolve whether anti-matter repels normal matter in a kind of "anti-gravity".
A man who turned his Leicestershire flat into the Starship Enterprise says the thought of an impending sale and moving into a conventional house gives him "nightmares".
Professor Andrew Coates of UCL's Mullard Space Science Laboratory analyses how realistic it would be to implement calls from the US Republican presidential candidate Newt Gingrich for a permanent base on the moon.