An Old Joke Updated with New Information

The astronomer was concluding his lecture at the synagogue: "And some of my colleagues believe that our own sun will expand and swallow the earth in 7.6 billion years."

"How many years did you say?" asked Mrs. Siegel from the back of the room.

"7.6 billion," replied the scientist.

"Whew!" said Mrs. Siegel. "I thought you said million!"