[after dark]

Pot calling kettle black.

The church should clean up its act, or the evangelicals will continue to gain on them.

Lies and name calling are the last acts of losers.

[Campion]

The church should clean up its act

The individual in question is an astronomer, not a theologian, and doesn't have the authority to teach on behalf of the church any more than I do.

The supreme teaching authority in the Catholic Church is vested in the bishops, in union with the Pope. The gentleman in question isn't a bishop, and isn't the Pope. He's expressing a personal opinion.