Revise GCSE Physics

Question:How are the techniques used for investigating near and distant planets different?

From the specification document you need to know the following:

Compare how information from space is returned to Earth from different distances:

1: Distant planets require data to be sent back.

2: Nearby samples can be brought back to Earth for analysis.

NB: These sentences should not be taken to imply that samples have ever been returned from nearby planets - they have not.