Professor Hawking gave his endorsement from his Cambridge home
The renowned cosmologist told local media at his Cambridge home he was backing his local Labour candidate, David Zeichner, because of concerns about the impact a Conservative Government would have on Britain.
He told reporters: “Another five years would be a disaster for the NHS, the police and other public services.”
Professor Hawking’s announcement comes in stark contrast to remarks he made about Mr Corbyn in March.
The 75-year-old branded the Islington MP a “disaster” after reports of an exodus of Labour Party donors began to surface.
He said at the time: “I regard Corbyn as a disaster. His heart is in the right place and many of his policies are sound, but he has allowed himself to be portrayed as a left wing extremist.
Hugh Grant also backed the Labour leader Snap election 2017: The pictures politicians may not want you to see Sat, May 27, 2017
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Jeremy Corbyn during a visit to Hackney Marshes Football Pitches, to highlight Labour's manifesto commitment to ensure 5% of the Premier League's television rights income is diverted to the grassroots game, during a General Election campaign
“I think he should step down for the sake of the party.”
The professor’s backing could prove invaluable in Cambridge, which is one of the tightest races in the election.
Mr Zeichner, Labour’s candidate who is seeking reelection for Cambridge, is defending a majority of just 599 votes.
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Mr Corbyn has received the backing of a number of prominent public figures and celebrities this election campaign.
Veteran actor Hugh Grant has been seen on the stump campaign for Labour and Mr Corbyn.
At a Birmingham Rally Tuesday, lefty comedian Steve Coogan and pop band Clean Bandit warmed up for the 69-year-old.
Famous rockstar Bob Geldof announced this week he was backing the Lib Dems in the election.