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The
Solar System: Its Size and Relationships
Learn...
The Milky way isn't the only one outside of this world there
are many others
The
solar system
Seasons and tides are caused by the interplay between the
gravitational force and the relative motions and positions
of Earth, Moon, and Sun. Our solar system consists of the
Sun, planets, asteroids, comets, and other materials revolving
around the Sun. Gravitational forces hold these materials
in their orbits. The universe is the sum total of the existing
matter and energy that surrounds us in all directions. It
is incredibly large. If we could move at the speed of light,
it would take us billions of years to travel from our galaxy
to the farthest known galaxy.
The
earth and moon
In the Earth-Moon system, the unique relationship between
the masses of Earth and the Moon and the distances between
them affect phenomena such as tides and eclipses.
The planets
Nine known planets orbit the Sun in our solar system. They
vary greatly in size, composition, and characteristics. Most
have moons and many even have rings of rock and/or ice particles,
debris, and gas. Land features and the moons of other planets
show evidence of earthquakes, weathering, erosion, and volcanic
activity similar to those found on Earth.
 The
star vs the sun
Light from
the Sun reaches us in a few minutes,
yet some stars are so far away that their light
takes several billion years to reach Earth.
 Earth
is pulling on its atomsphere
See
the earth's gravitational pull holds onto the
atmosphere.
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