1) a star burst can be defined as stars formed from recycled dead star materials.
true or false

2) when the milky way was in its earliest ages, hydrogen, helium and other common elements were the only ones around.
true or false

3) to estimate the milky way’s age, astronomers measure the elements found in the oldest stars in the milky way’s dense groupings of stars that make the halo shape, which are referred to as what?
1-pulsar planets
2-star bursts
3-brown dwarfs
4-global clusters