'Star Trek' symbol on Mars continues 'feud' between Mark Hamill and William Shatner

Shatner vs. Hamill (Credit: AP)
Shatner vs. Hamill (Credit: AP)

The long-held rivalry between Star Wars and Star Trek had another opportunity to manifest itself this weekend.

A tweet from NASA sent on Friday noted a particularly recognisable formation on the surface of Mars, reminiscent of the Star Fleet insignia from Star Trek.

Read more: Has Star Trek made it to Mars?

There's certainly a likeness there, one which William Shatner immediately leapt upon, tagging in the official @StarWars with his remarks.

“Hey @starwars! Will you hurry up your Rebel Scums? We beat you!” crowed Captain James Tiberius Kirk.

Mark Hamill quickly hit back: “Looks like a boomerang to me. #Meh.”

Clearly keen to have the last word, Shatner warned: “Don’t be jelly, Mark.”

It's far from the first time that Shatner and Hamill have tussled online in the past – they frequently trade blows on Twitter, often just skirting the edge of civility.