Other studies yield age estimates of 7.4 and 8.7 billion years.

Hence this is the age estimate for the birth of the planet, and two stars.

Without grandchildren, there is less to support the older age estimates.

Containing 11 percent less iron than the Sun, recent age estimates indicated that the star is about 7 billion years old.

Beyond that, age estimates were based on assumed accumulation rates.

The better the fit of the data points to a line, the more reliable the resulting age estimate.

Paul nodded, relieved, and added a few years to the man's age estimate.

For these reasons the correctness of the age estimates was repeatedly called into question.

The age estimate is based on the probability of the members having their current orbits, rather than from any physical evidence.

Perhaps there is much less matter than the standard theory assumes, which would result in older age estimates.