Nebula (Cloud)

Protostar

Blue Stars

Super Giants

Super Nova(Explosion)

Spinning Black Hole

Spinning PulsarWhite Dwarf

Brown Dwarf

Planetary Nebula

Giants

Star<3SM >3SM

Main Sequence8 billion years

Main Sequence2 billion years

What Comes Next?

What Comes Next?

What Comes Next?What Comes Next?

What Comes Next?

What Comes Next?

What Comes Next?

1964 Arno Penzias and Robert Woodrow Wilson

2003 Wilkinson Microwave Anisotropy Probe (WMAP)

35 The Big Bang theory states that the universe has been growing larger since its beginning. Which of the following provides the best evidence to support this theory?

(A) The structure of galaxies (B) The high temperature of stars (C) The large distances to other stars (D) The directions in which galaxies are moving

When a star like the Sun uses up most of its fuel, it changes colour from yellow to red. What has changed on the surface of the star to cause this colour change?