The spectrum of a core-collapse supernova directly reflects

What kind of stars do we expect to see in atypical globular cluster in the Milky Way?

What are standard candles?

List out the Harvard spectral classes in order of decreasing mass.

Which of the following types of stars would we NOT expect to have carbon in their photospheres?

Which of the following are rarely or never found in globular clusters?

Suppose that I’ve measured a parallax for a system of 0.58 mas. What’s the distance to this system?

What kind of object is this DSO?

This image includes data from which of the following wavelength regimes?

The surrounding ring of material was ejected around 10,000 years ago. Using the scale on the image, estimate the velocity at which the ring of material is travelling outwards.

Suppose the scale on the image was 6 light-years to 31", rather than 3 light-years to 31". Calculate the distance this DSO would have to be at for this scale to be accurate.

Identify the DSO in Image B

This object is much smaller than other objects of the same type. What does this suggest about this DSO?

Identify the DSO in Image C. The left and middle images involve optical wavelengths, while the right image was taken in x-rays.

The cross labels the location of the

Would you expect the optical ring (pink) to beconcentric with the x-ray ring (right)?

As seen in the x-ray image, there is no extended x-ray emission besides the hot ring of material. This is suggests that

Assuming the optical and x-ray rings were emitted from the same object but at different times, which ring would you expect to have been emitted first?

Below are again general questions: Albert Einstein said that Gravitational Waves could be a natural outcome of what theory?

A Pulsar is highly magnetized what?

The distance to a star is 2.3 parsecs. This distance is within half an order of magnitude to which of the following distances?

What is Astronomy?