Meanings of prove definitively in English

If we want to ever prove definitively whether there is life on Mars, we will have to send someone there.

Hard to prove definitively.

We can also prove definitively that this alien ship is the cause of the communications interference that has crippled space commerce for months.

Our findings reinforce the need to include the molecular screening of the t(12;21) translocation within ongoing prospective ALL trials to prove definitively its prognostic impact.

Not to mention that it proves definitively that he's not simply trained.

As he pointed out, neither creation ex nihilo nor emanation could be proven definitively by reason alone.

An Italian scientist claims to have reproduced the shroud which, he claims, proves definitively its linen is a medieval fake.

Tristan "Mack" Wilds proves definitively that his acting prowess is only improving in each role he takes post-The Wire.

"Either that, or mine will be proved definitively the most powerful," said La Pelletier with a certain professional calm.