Astronomers have reported the discovery of a new supernova.

The presenter explained the results in detail.

He is world-famous as an astronomer.

He is a famous author and a person who is respected by many people.

The time has come to start a new challenge.

I will report on the project tomorrow.

We will release a report about the new project tomorrow.

He discovered a new star.

He discovered a new star.

He was the first discoverer of that new species of plant.