Nebulas
What is a cloud of gas and dust where stars are born.
Nebulas
This is the stage when a star is shining and fusing hydrogen into helium.
Main Sequence Star
What is formed from the collapse of a massive star after a supernova?
A Black Hole
A massive star ends its life in this dramatic explosion
a Supernova
What type of star is our Sun?
Main Sequence Star
What is the stage after a nebula when a star begins forming but hasn’t started fusion
Protostar
A very small, cool, long-lived star that slowly burns its fuel
Red Dwarf
The force that pulls matter into a black hole
Gravity
What is the final stage of a low- to medium-mass star called?
White Dwarf
The Sun is mostly made of these two elements
Hydrogen and Helium
Nebulae are mainly composed of these two elements
Hydrogen and Helium
The Closest star to Earth
The Sun
Black holes can slowly grow by pulling in this from nearby space
Matter
The leftover core of a massive star that is very dense but not a black hole
Neutron Star
This happens when the Moon moves between the Sun and Earth and blocks the Sun’s light.
Solar Eclipse
The nebula that formed our Sun is called?
The Solar Nebula
The hottest and brightest stars on the Main Sequence are usually this color
Blue
The boundary around a black hole beyond which nothing can escape
The Event Horizon
Small stars that burn fuel slowly may live longer than this.
billion years
The Sun will eventually leave the main sequence and become this type of star
Red Giant
Some nebulae do not shine but can block light from stars behind them. These are called what?
Dark Nebula
Stars shine because of this process occurring in their cores
Nuclear Fusion
The very dense center of a black hole is called this
Singularity
Neutron Star
These sudden bursts of energy and light shoot out from the Sun’s surface.
Solar Flares