Astronomers plan to observe radio waves from a distant supernova remnant using a telescope at a ground observatory.
Why is a ground observatory suitable for these observations?
At this wavelength, the atmosphere absorbs very little of the incoming radiation.
With a digital detector, the telescope can record radiation blocked by the atmosphere.
With a large dish, the telescope can recover most radiation absorbed by the atmosphere.
At this wavelength, the radiation has a high frequency, so it passes straight through the air.
75 exam-style questions on Edexcel GCSE Physics 7.3 Stars, covering 7.3.1 Evolution of stars similar to the Sun, 7.3.2 Evolution of massive stars, and 7.3.3 Observing the Universe. Each one has a worked solution and a mark scheme showing where the marks go.