Space physics

A group of stars is called a galaxy. What is the name of our galaxy?

The Sun is one of the stars in our galaxy. What was the Sun originally formed from?

Which of the following forces was involved in the formation of the Sun?

Stars produce light because they release energy. Complete the sentence. Choose the answer from the box. <br><br> The process which releases energy inside stars is __________.

The Universe contains many stars. The Sun is the star at the centre of our solar system. Give three other types of object that form our solar system.

Some main sequence stars will eventually form black holes. Table 3 gives the mass of four stars. Which star in Table 3 is most likely to form a black hole? Table 3: Star | Mass in kg --- | --- Arcturus | 2.2 x 10³⁰ Betelgeuse | 2.2 x 10³¹ Cygni A | 1.4 x 10³⁰ The Sun | 2.0 x 10³⁰

The distance from Cygni A to the Earth is 1.1 × 10⁸ gigametres. Which distance is the same as 1.1 × 10⁸ gigametres?

The light spectrum from every galaxy includes dark lines. The lines have the same pattern. Figure 7 shows the position of dark lines in the visible spectra of light from the Sun and from two distant galaxies. Explain what these light spectra tell us about the velocities of galaxy A and galaxy B.

The distance between Arcturus and the Earth is 3.6 × 10¹⁴ km. speed of light = 3.0 × 10⁸ m/s Calculate the time taken for light from Arcturus to reach the Earth. Use the Physics Equations Sheet.

When stars are formed, they contain mostly hydrogen. Describe how stars produce all other naturally occurring elements.