The Solar System and Astronomy

Region with rocky objects between Mars and Jupiter.

Region of icy bodies beyond Neptune's orbit.

Distant spherical region of icy comet nuclei, source of long-period comets.

Celestial objects made of dust, rock, and ice; don't orbit the Sun like planets do.

Largest moon in the solar system; belongs to Jupiter.

The Sun is approximately 4.5 billion years old.

Planets with shorter years than Earth, closest to the Sun.

Planet with the largest volcano in the solar system.

Most planets are named after Greek and Roman Gods and Goddesses.

No existing photo of our solar system in the Milky Way galaxy.

The Sun comprises about 98.8% of the solar system's mass.

Two main types: Refractor and Reflector telescopes.

First mission to land humans on the Moon.

A dense remnant star formed from a supernova explosion.

Gravitational monster that can result from a supernova.

Massive explosion at the end of a star's life.

Nearest central galaxy to the Milky Way, about 2.5 million light-years away.

Earth spins from West to East.

Earth is approximately 150 million km from the Sun.

Consists of 78% nitrogen and 21% oxygen.

It takes about 8 minutes for sunlight to reach Earth.

Closest star to Earth aside from the Sun.

The Moon has no atmosphere and reflects sunlight.

The Moon orbits Earth every 27 days.

The Moon reflects sunlight making it visible.

There are eight main phases in the Moon's cycle.

Occurs when there are two full moons in one month, about every 2.7 years.