Cosmology

1. The remnant heat from the Big Bang that fills the universe (shortened)
5. The process in which atomic nuclei combine to form heavier elements, releasing energy in stars.
8. A system of stars that are gravitationally bound together.
9. A massive explosion that occurs when a star reaches the end of its life cycle.
10. The stage in a star’s life cycle when it fuses hydrogen into helium in its core.
12. A pattern of stars that appears to form a recognisable shape in the sky.
13. A bright, expanding shell of gas resulting from a dying star’s explosion

2. The shift in light from distant galaxies toward longer wavelengths, indicating they are moving away from us.
3. A young star still in the process of forming.
4. The apparent change in the frequency of waves due to the motion of the source or observer.
6. The total amount of light emitted by a star, regardless of its distance from Earth.
7. A collection of billions of stars, gas, and dust bound together by gravity.
9. A tool used to analyse the light from celestial objects to determine their composition.
11. A large cloud of gas and dust in space where new stars are born.