But to put this in perspective, the age of the moon and earth is expressed in billions. So an update of 40 million , while not insignificant, is not "gigantic."
The new thinking is that the moon is roughly 4.46 billion years old. That is rounded off, of course, but written out it looks like this
4,460,000,000
The "updated" age of the moon is reflected in the place containing the 6. The old estimate was 4, 425, 000, 000. Although individual scientists had some disagreements with each other about the precise value.
At any rate, it is still universally agreed that the moon is "about 4 and a half billion years old."
