There has been such a huge deterioration in educating people to speak and write in ways that use language and the meaning of words very clearly.
The sentence in the quote above is not an example of a clear communication helping to preserve the meaning of words and the clear differences in their meanings.
As far as we know, to date, there ARE "countless" suns [in the universe] but (as far as we know) there ARE NOT "countless earths all rotating" about them. Countless "planets"? Yes (possibly), but as far as we know there is only one earth in the universe just as there is only one earth in our own solar system (supporting an earth-like climate capable of supporting the immense diversity of carbon-based life, and the sentient life, that earth supports)
In fact the whole point of the exercise is that contrary to knowing their are "countless earths" out there, we in fact do not know of any "earths" but our own. If there are other "earths" out there, but the authors of this report are a representative sample of the intelligence in our efforts looking for one, no one should expect success.
Whaaaaaaaaaaaaaaaaaaaaaaaaaaat