This was a momentous achievement for supporters of the right to abortion.

Yet there is a dark side to this momentous achievement.

LeMond's momentous achievement would seem deserving of more depth than Mr. Nye's summary gives it.

These momentous achievements in the wake of the teaching of Mohammed have become the center of much historical reflection in recent years.

Former US President George W Bush described the news as a "momentous achievement".

The scientists withheld news of the momentous achievement until yesterday to allow time for independent researchers to study and evaluate their results.

The Mets built an 8-2 victory last night and the modest, but nonetheless momentous, achievement of their second straight triumph.

"This is a momentous achievement, sir."

Even stranger yet," said Antonov, "is why the Americans have never announced such a momentous achievement.

They would still need to avoid the burning rays of direct sunlight, but even so, it would be a momentous achievement.