The Planets
The Sun
The Stars
The Galaxies
The Big Bang
100

Largest planet in the solar system; twice as massive as all the other planets combined

What is Jupiter?

100

A yellow dwarf star at solar system's center.

What is Sun?

100

Smallest known star, 20-40 km in diameter.

What is a Neutron Star?

100

A huge collection of gas, dust, and billions of stars that are being held together by gravity.

What is a galaxy?

100

Irregular rock fragments orbiting the sun.

What are asteroids?

200

The planet known as the outermost ice giant

What is Neptune?

200

Layer where energy radiates outward from core.

What is the Radiative Zone?

200

Star similar in size to Earth, but very dense.

What is a White Dwarf?

200

A rotating disk of stars and dust with a dense bulge in the center and several arms spiraling out, appearing like a pinwheel.

What is a spiral Galaxy?

200

Icy bodies releasing gas or dust, known as dirty snowballs.

What are comets?

300

The planet popularly known for its beautiful rings which are made up of billions of chunks of ice and rock

What is Saturn?

300

Outermost layer where plasma cools and rises.

What is the Convective Zone?

300

Very large star with high luminosity and low temperature.

What is a supergiant?

300

A galaxy with a shape that varies from nearly circular to very elongated, containing little gas and dust and older stars.

What is an elliptical galaxy?

300

Bright streak of light from a meteoroid.

What are meteors?

400

The planet also known as the Red Planet due to its bloody brick-red colored surface mainly because of the presence of iron oxide on rocks

What is Mars?

400

Process converting hydrogen to helium in core.

What is nuclear fusion?

400

Star with diameter exceeding Mars' orbit.

What is a hypergiant?

400

A galaxy that is neither disk-like nor elliptical, with no regular shape, little dust, and many bright young stars.

What is an irregular galaxy?

400

Cosmological model explaining Universe's origin.

What is the Big Bang Theory?

500

The only planet known to have life

What is Earth?

500

11-year periodic changes in solar magnetic activity.

What is the solar cycle?

500

Celestial body producing light and heat via fusion.

What is a star?

500

A supermassive black hole at the center of the Milky Way with a mass of about 4 million times that of our Sun.

What is Sagittarius A?

500

Formation of hydrogen and helium elements.

What is nucleosynthesis?