A space probe exploring the outer reaches of the solar system is transmitting telemetry signals back to Earth. As the probe moves directly away from Earth, its signals exhibit red-shift.
Describe how the wavelength and frequency of the radio waves received from the probe change when observed from Earth because of this red-shift.
The average orbital radius of a hypothetical Kuiper Belt object is measured to be approximately 7.3 × 104 gigametres (Gm).
Which of the following is equivalent to this distance in metres (m)?
A team of astronomers publishes a paper claiming to have observed a tenth major planet in our solar system using a novel infrared telescope, but their observations contradict existing sky surveys. Explain why it is important for these new observations to undergo peer review before they are widely accepted.
Practise AQA GCSE Physics Solar system; stability of orbital motions; satellites (physics only) with exam-style questions for Foundation and Higher tier. 27 questions covering Our solar system, The life cycle of a star, and Orbital motion, natural and artificial satellites, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.