You are correct. Stephen Hawking(who currently holds the same seat Sir Issac Newton held) and CalTech’s Kip Thorne has proved some of them incorrect.
Yes, he did... and many followers will continue to find different results... That to me is what makes this so exciting - ongoing changes in current science! Actually, it is a shame that it is happening so fast these days - technology is finally attempting to catch up with real science. Unfortunately, you need to be a youngster for you to be able to see and visualize the future. Damn it all...heh.
Hawking left the Lucasian seat on October last year (just a pedantic FYI).