Planets & Beyond
All About Stars
Stellar Evolution
Cosmology
Earth & Moon
100

This gas giant is famous for its Great Red Spot.

What is Jupiter?


100

This is the closest star to Earth.

What is the Sun?

100

This term describes the explosive death of a massive star.

What is a supernova?

100

This is the name of the galaxy that contains our solar system.

What is the Milky Way?

100

This natural satellite is Earth's only moon.

What is the Moon?

200

Often called Earth's "twin" due to its size, its surface reaches a hellish 900°F.

What is Venus?

200

This constellation is known for its three-star "belt."

What is Orion?

200

This term describes a star like the Sun in its final "puffed up" stage before shedding outer layers

What is a red giant?

200

This theory describes the origin of the universe from a dense, hot point roughly 13.8 billion years ago.

What is the Big Bang theory?

200

This event occurs when the Moon passes directly between the Earth and the Sun.

What is a solar eclipse?

300

Discovered in 1930, this dwarf planet orbits beyond Neptune

What is Pluto?

300

Not counting the Sun, this is the brightest star in Earth's night sky.

What is Sirius?

300

A star that has run out of fuel and collapsed into an extremely dense object is called this.

 What is a white dwarf (or neutron star)?

300

 Discovered in 1965, this faint radiation glow is considered the afterglow of the Big Bang.

What is the cosmic microwave background (CMB)?

300

The Moon's gravitational pull is the primary cause of these rise-and-fall ocean movements.

What are tides?

400

This is the only planet in our solar system known to rotate on its side.

What is Uranus?

400

Used for navigation, the North Star goes by this formal name.

What is Polaris?

400

The ultimate collapse of a massive star leaves behind an object so dense that not even light escapes.

What is a black hole?

400

This mysterious substance doesn't emit light but makes up most of the universe's matter.

What is dark matter?

400

This layer of Earth's atmosphere protects life from harmful ultraviolet radiation.

What is the ozone layer?

500

These icy, rocky bodies beyond Neptune make up an outer region of the solar system containing Pluto.

What is the Kuiper Belt?

500

Occurring in a star's core, this process fuses hydrogen into helium to power starlight.

What is nuclear fusion?


500

This term describes a system containing two stars orbiting a common center of mass.

What is a binary star system?

500

 This mysterious force is thought to be accelerating the expansion of the universe. 

What is dark energy?

500

This occurs when a full moon appears biggest and brightest at its closest orbital point to Earth.

What is a supermoon?

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