Solar System
What kind of force holds the solar system together and governs the movement of the objects within it?
What is gravity?
The sun is a typical __?
What is a yellow dwarf?
The chemical composition of most starts is 73% hydrogen, 25% helium, and 2% ____.
Fill in the Blank.
What are other elements?
Irregular shaped rocks that orbit around the Sun.
What are asteroids?
The first stage which existed right after the Big Bang was the ____.
What is the Radiation Era?
What is an example of a natural satellite?
What is the moon?
The sun is located where?
What is the center?
A star that is the smallest known start which is measured from 20 to 40 km in diameter.
What is a neutron star?
The largest asteroid, found between the orbits of Mars and Jupiter.
What is Vesta?
Epochs are something that occurred within the Universes first tens of thousands of years. Each era was divided into smallest stages called Epochs.
What galaxy does our solar system belong to?
What is the Milky Way?
The suns energy is a product of ___?
What is Nuclear Fusion?
Starts that are bigger than giant stars.
What are Super Giants?
C-type asteroids contain what?
What is Carbon?
What are the two major stages of the universe's evolution?
What is Radiation and Matter Era?
Why does the sun pull planets towards it?
What is the size and mass, and the strong gravitational force.
About what percent makes up most of the mass in the solar system?
What is 99.8%?
Stars that are 1000 times bigger than the Sun.
What is a Giant?
M-type asteroids contain what?
What is nickel and iron?
The dominance of radiation over matter ended when what took place?
What is Nucleosynthesis?
What is the closest planet to the sun?
What is Mercury?
I am a dense layer of plasma where energy is produced at the core and it radiated outwards/ towards the surface. What am I?
What is the Radioactive zone?
Stars differ in ___ or the amount of light they radiate in.
What is luminosity?
S-type asteroids contain what?
What is Silicate?
When did the Universe start expanding?
What is 13.8 billion years ago?