Across
- 1. Evidence of the __ is distant galaxies red shift
- 4. frequent beta decay process, t=1000's of years
- 6. Pure form species of atoms
- 7. Undifferentiated stony meteorites
- 8. Process of building a new atomic nuclei
- 10. proton capture in supernovae process, t=seconds
- 11. Occur in matrix of chondrites
- 12. Loss of two protons and 2 neutrons
Down
- 1. Converts neutron into proton
- 2. Building blocks of planets
- 3. Type of meteorite rich in iron
- 4. Type of meteorite equal parts metal & silicate
- 5. Type of meteorite rich in silicate minerals
- 9. Gas & dust rich stage of star formation
- 13. A single quantity of an element