Trump rants against Mueller probe -- then follows up by tweeting 'Space Force all the way!'

President Donald Trump went on a conspiratorial rant against special counsel Robert Mueller's probe on Thursday -- and then issued a bizarre boast about his newly announced "Space Force."

Writing on Twitter, the president slapped together multiple conspiracy theories about the origins of the Mueller probe to claim it was illegitimate and should be shut down.

"This is an illegally brought Rigged Witch Hunt run by people who are totally corrupt and/or conflicted," he wrote. "It was started and paid for by Crooked Hillary and the Democrats. Phony Dossier, FISA disgrace and so many lying and dishonest people already fired. 17 Angry Dems? Stay tuned!"

In fact, the original FBI investigation into the Trump campaign's ties to Russia started when former campaign aide George Papadopoulos drunkenly boasted of his efforts to get dirt on then-rival Hillary Clinton to an Australian official who subsequently informed the FBI.

Seconds after attacking the Mueller investigation, the president followed up by simply tweeting, "Space Force all the way!"

Vice President Mike Pence on Thursday announced the administration's plans to create the Space Force, a sixth branch of the military that will focus exclusively on establishing an American military presence in space.