The Big Band

123456
Across
  1. 3. the all-encompassing name for earth and space
  2. 5. the building blocks of life
Down
  1. 1. the universe has 13.8 million of these under its belt
  2. 2. the start of the universe
  3. 4. what the universe is still doing
  4. 6. what the first point in the universe had an infinite amount of