Adam Gilchrist scored the second fastest Test century in history as Australia took total command of the third Ashes Test. He reached his ton in 57 balls, one behind Viv Richards' 20-year record as Australia declared on 527-5, a lead of 556, on day three in Perth.
Michael Clarke and Mike Hussey also completed centuries as Australia looked in the box seat to regain the Ashes.
In reply, England were 19-1 at the close Andrew Strauss out for a duck.
England were set a mammoth 557 to win the Test, which would be the highest ever run chase if they were successful.
Or they need to try and bat out two and a bit days in a desperate attempt to keep the defence of their Ashes crown alive.
But England were up against it from the start of their reply with Andrew Strauss wondering what he had done to upset umpire Rudi Koertzen.
For the second time in this match, he had been on the wrong end of a dubious decision, and this time had to walk when he was given out lbw for a duck, when replays showed it was probably too high.
It was particularly annoying for England as the umpires had refused to give any lbw decisions in the Australia innings on the basis of height on a bouncy wicket.
Hussey hit a Test ton on his hoe ground the Waca
But nothing could take away from Gilchrist's amazing onslaught with the bat.
It was nothing short of amazing and from early on it was clear he was gunning for Richards' record, which was set against England in Antigua.
In one Panesar over he smashed 0-2-6-6-4-6, which was the first time 24 had been scored in an Ashes over.
But Gilchrist was not the only centurion for Australia, with Michael Hussey hitting his first Test ton on his home ground and Michael Clarke completing his fourth Test hundred.
And despite the bowling figures making ugly reading for England, they actually bowled pretty well for most of the day.
And early on in the match there were extremely unlucky not to take more wickets in a mixture of lbw shouts not being given as well as missed chances.
Hussey was one with fortune on his side as he survived numerous close calls before falling to Panesar for 103 on the stroke of tea.
He had earlier breathed a sigh of relief when a loud lbw appeal was turned down by umpire Aleem Dar early on in his innings and he was then completely flummoxed by a Hoggard inswinger which he hit in the air but the ball fell agonisingly wide of Alastair Cook at midwicket.
There was also a huge shout for a catch at silly point off Panesar but Hussey, on 15 at the time, did not walk and Rudi Koertzen deemed the ball had flicked his pads but replays showed there was probably a bit of bat in there too.
He had another life when he skied a shot while reaching his half-century but an advancing Geraint Jones could only get his finger tips to the ball.
Andrew Strauss also came close to dismissing him as Hussey edged the new ball but Strauss could not keep hold of it.
Before play began, England knew at the very least they needed to avoid defeat to keep alive their dreams of retaining the Ashes.
And the omens looked good when Steve Harmison struck in the sixth over of the morning session, captain Ricky Ponting edging a perfect length delivery behind to Jones for 75.
But for the rest of the session England were frustrated and the rub of the green was certainly with the hosts at the Waca.
Matthew Hayden was furious with himself when he departed eight runs short of his century, a great parried catch by Paul Collingwood off Monty Panesar seeing him off.
But before he fell Hayden had had the benefit of the doubt by Koertzen on an lbw shout and he had edged Hoggard but it fell just short of Jones. A thick inside edge also somehow missed his stumps and raced away for four.
After their hard work for little success in the morning session, England tried to continue in the afternoon but they began to toil in the heat, which was upwards of 37C.
And they were punished firstly by Clarke and Hussey who put on a record 151 runs for the fourth wicket and then by Clarke and Gilchrist who flayed the bowlers around the ground.
Panesar bowled 34 overs in the second innings and although he conceded 145 runs, he took the wickets Hayden, Hussey and Andrew Symonds to end with eight in the match.