Never mind that we are not yet able to detect a planet the size of the earth at a similar distance from a similar star, even if that star were as close as Alpha Centari, Epsilon Eridani or other very very nearby stars.
IOW, if we were near one of those nearby stars, we couldn't detect the earth!.
Other than by the copious radio frequency emissions, but even that method is only possible out to less than 100 light years, since we've not been putting out much of that stuff any longer than that.