The scientists did open a sarcophagus holding the man thought to be in charge of building the pyramid
Rover went into the Great Pyramid of Cheops in Cairo, which is one of the three famous pyramids of Giza.
They're a huge tourist attraction in Egypt and scientists had hoped to unlock some of their secrets with the live TV broadcast.
They'd hoped the secret chamber might contain valuable papers, tools or even a statue of Pharaoh Khufu, who built the pyramid.
But now we'll just have to wait and see what happens next.