Life Cycles of high and low mass stars Crossword

Occupies space and posses rest mass.
Giant cloud of dust and gas in space
Chemical element that has a symbol of H
What goes up must come down
Colorless odorless non-toxic gas Symbol HE
Very large star of high luminosity and low surface temperature
A star that suddenly increases greatly in brightness because pf catastrophic explosion that ejects most of its mass
Chemical element symbol C
Small dense star that is the size of a planet
Fine particles of solid matter
A luminous spheroid of plasma held together by gravity
A celestial object, thought to be a rapidly rotating neutron star, that emits regular pulses of radio waves and other electromagnetic radiation at rates
A contracting mass of gas which represents an early stage in the formation of a star, before nuclear synthesis has begun.
A Gravitationally balanced system of stars remnants gas dust and dark matter.
A region of space and time exhibiting gravitational acceleration so strong not even light can escape
A White Dwarf that has cooled
Electromagnetic radiation
Penetrating electromagnetic radiatin arising from radioactive decay of atomic nuclei.
Type of propagating disturbance