Planetary Neighborhood
In the night sky
Far Out
Moons
Astronomy History
100

This gas giant features a prominent Red Spot which astronomers believe to be the largest anticyclonic storm in the solar system.

What is Jupiter?

100

This series of 12 constellations along the ecliptic have are cycled each year and have been dubiously used to predict personalities and the future.

The Zodiac.

100

Designated M31, this barred spiral galaxy is the closest galaxy to the Milky Way.

What is the Andromeda Galaxy?

100

These dark splotches on the surface of our moon were once thought to be these.

What are oceans?

100

In 1961, this nation made history by placing the first human in space to orbit the Earth.

What is the Soviet Union?

200

This high concentration of iron in this terrestrial planet's rocks gives it its signature color.

What is Mars?

200

Due to its proximity to the North celestial pole, this star appears motionless during rotation and was often used for navigation.

The North Star (Polaris)

200

Sagittarius A* is the name given to this type of object thought to be at the center of our galaxy and most larger galaxies.

What is a supermassive black hole?

200

The gravitational force of the moon on the Earth is responsible for these coastal patterns.

What are tides?

200

Ziggurats were large pyramid like observatories built by this ancient civilization 5000-4000 years ago.

What is Mesopotamia?

300

It is believed that small moons and captured asteroids were ripped apart by this planet's gravity to create its most prominent feature 10-100 million years ago.

What is Saturn?

300

Typically only visible through telescopes or cameras, these are large colorful clouds of ionized gas deep into interstellar space.

What is a nebula?

300

This collection of rocks and icy bodies is considered the boundary of the solar system and is the origin point of most comets.

What is the Oort Cloud?

300

The largest of Saturn's 83 moons, this is the only moon known to have a thick atmosphere, hosts rivers and lakes of liquid methane, and is the home world of Thanos.

What is Titan?

300

Apart from creating calculus, the first quantitative theory of gravity, laws of motion, and large parts of modern physics, Isaac Newton also developed this astronomy instrument to prove his theory on light.

What is a Newtonian Reflector telescope?

400

This inferior planet has an axial tilt of nearly 180 degrees, effectively flipping the planet upside down and causing it to rotate backwards.

What is Venus?

400

DAILY DOUBLE Visible to the naked eye, this cluster of stars with 7 prominent members has been observed and documented by civilizations as far back as 1600BC

What is the Pleiades?

400

Astrophysicists speculate that this holds galactic arms together and accounts for the strange gravitational behavior of galaxies.

What is dark matter?

400

A major impact is thought to have tilted the axis and created a single large moon of ejected material from this planet.

What is the Earth?

400

This 17th-century Italian astronomer proved heliocentrism by observing large moons in orbit around Jupiter and the phases of Venus.

Who is Galileo Galilei?

500

Based on calculations by French astronomer Urbain Le Ferrier, this planet became the first to be discovered by mathematical prediction in 1846.

What is Neptune?

500

Nicknamed the "dog star", this alpha star of Canis Major is the brightest star visible to the naked eye due to its proximity to Earth.

What is Sirius?

500

In order to view deep sky objects at extreme distances, large observatories and space telescopes often analyze this type of light. (2 possible answers).

What is radio or infrared light?

500
These two large moons are thought to harbor potential life beneath their icy crust in subsurface oceans. (2 answers)

What is Europa? / What is Ganymede?

500

Frustrated in his hunt for comets, this French Astronomer published a catalogue of notable objects in the sky to stop others from mistaking them for comets.

Who is Charles Messier?