The Planets of Our Solar System
The Sun and Stars
Life Cycle of Stars
Galaxies
Asteroids, Comets, Meteoroids and the Big Bang
100

This consists of the sun, planets and their moons, and a variety of smaller celestial objects including asteroids, meteor, comets and many more.

What is our solar system?

100

The innermost part of the sun functioning as a nuclear reactor producing enormous energy.

What is the core of the sun?

100

This is earliest stage of a star's life.

What is a protostar?

100

Astronomers prefer using this unit to measure astronomic distances and is equal to 3.26 light years.

What is a parsec?

100

This region is between Mars and Jupiter contains millions of asteroids, which are called main belt asteroids

What is the main asteroid belt?

200

This is the smallest inner planet, closest to the sun, with the fastest revolution because its nearest to the sun. It also has no moons

What is the Mercury?

200

Burning huge amounts of nuclear fuel at their cores. Heat generating pressure prevents a massive star's core from collapsing.

What produces high energy in massive stars?

200

This final stage of a white dwarf star where no light is emitted

What is a black dwarf star?

200

These are the largest satellite galaxies.

What is the Large Magellanic Cloud and Small Magellanic Cloud?

200

This type of asteroid composes more than 75% of known asteroids, carbonaceous asteroids, made up of carbon, dominates the main belt's outer regions. 

What is a C-type asteroid?

300

These are the four closest solid, dense planets to the sun that have outer orbits.

What are the Inner Planets?

300

This is a layer of dense plasma where energy produced at the core is radiated outward towards the surface. (2-7 million Kelvin)

What is the Radiative Zone?

300

This is a core remnant of a massive star after supernova


What is a neutron star?

300

This is a part of one of the three components of a galaxy and is a spherical structure found in the center of the galaxy.

What is the bulge?

300

This part of a comet is a halo of evaporated gas and dust surrounding a comet's nucleus.

What is the coma?

400

This is the unit used to describe solar system distances and represents the approximate distance between Earth and the Sun, which is approximately 93 million miles.

What is the Astronomical Unit (AU)?


400

Most stars are classified under this system.

What is the Morgan Keenan system?

400

These type of stars with a mass 8 or more times than the mass of the sun turn into black holes after a super nova.

What are massive stars?

400

The Milk Way is located in this small cluster of gravitationally bound galaxies.

What is the Local Group?

400

During this epoch during the matter era, the universe cooled down enough for electrons to join with protons that create neutral hydrogen atoms. 

What is the atomic epoch?

500

This planet is the outermost ice giant with the Great Dark Spot, Triton moon, and bright blue color.

What is Neptune

500

A sudden high energy explosion near sunspots that happens due to magnetic field lines that often tangle, cross, or reorganize in the sun. They are our solar system's largest explosive events.

What is a solar flare?

500

This happens when stars' cores fuse helium into carbon and their expanding outer layers form gas clouds in space

What is a planetary nebula?

500

This type of galaxy varies from nearly circular to very elongated shapes, can be also stretched out that other types of galaxies, and possesses little gas and dust.

What is an elliptical Galaxy?

500

This is the rarest of type of meteorite of all. Some are formed from molten iron-nickel and others by impact and welding of stony fragments

What is a stony-iron meteorite?

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