Believe it or not, that's "Good Evening" in Martian! You might wonder how NASA intends to communicate with any alien life forms its probes might encounter as they whizz about the universe. You or I might employ a combination of mime, pointing and angry shouting to make ourselves understood, but NASA linguists have no such trouble.

Using data collected from the Hubble Space telescope, along with specially developed computational algorithms and a complex scientific technique called 'guessing', they have mastered over 4000 alien languages. Now you too can learn to speak alien with The Official NASA Galactic Phrasebook!

All this and more for just £25 or 3000 Galactic Credits.

(Only joking - seriously, it's twenty-five quid)