Physical Properties of Stars Crossword Puzzle

QUESTIONS LIST:

• star : a large luminous object made of hydrogen and helium gases
• analyze : to discover or reveal something through detailed examination
• apparent magnitude : the brightness seen from earth
• nebulla : large cloud of gas and dust containing an immense volume of material
• black hole : object with gravity so strong that nothing, not even light, can escape
• nuclear fusion : the process by which atoms combine to form heavier atoms
• protostar : a contracting cloud of gas and dust with enough mass to form a star
• neutron : stars that are extremely small and dense
• white dwarf stars : stars that about the size of earth
• luminosity: the brightest the star would have if it were at a standard distance from earth