Scientists study its surface.

Meaning: This sentence describes the work of scientists in investigating and gaining knowledge about the surface characteristics of Mars.

Choice of Words: Scientists are individuals who engage in scientific research. "Study" refers to the process of examining and analyzing something. "Surface" denotes the outermost layer of Mars.

Alternative Expressions

The scientists are studying its surface.

Meaning: This means that a specific group of scientists are looking at the outside of something to learn more about it. It's like when a group of scientists are looking at the outside of a new planet to see what it's like.

Choice of Words: The scientists tells us that we are talking about a specific group of scientists. Are studying means that they are currently looking at and learning about something. Its surface tells us that they are looking at the outside part of something. When you put it all together, "The scientists are studying its surface" means that a specific group of scientists are currently looking at the outside part of something to learn more about it.

The scientists have studied its surface.

Meaning: This means that a specific group of scientists have already finished looking at the outside of something to learn more about it. It's like when a group of scientists have finished looking at the outside of a new planet to see what it's like.

Choice of Words: The scientists tells us that we are talking about a specific group of scientists. Have studied means that they have already finished looking at and learning about something. Its surface tells us that they were looking at the outside part of something. When you put it all together, "The scientists have studied its surface" means that a specific group of scientists have already finished looking at the outside part of something to learn more about it.

Related Expressions