Transcript Space ppt

Space…and Beyond!
S6E1. Students will explore current scientific views of the universe and
how those views evolved.
a. Relate the Nature of Science to the progression of basic historical
scientific models (geocentric, heliocentric) as they describe our solar
system, and the Big Bang as it describes the formation of the universe.
b. Describe the position of the solar system in the Milky Way galaxy and
the universe
Solar Eclipses
• Occurs during the New Moon
• The moon is almost exactly between the Earth and the
Sun, blocking the sunlight from the Earth.
Lunar Eclipses
• Full Moon
• The Earth is almost directly between the Sun and the
Moon, causing the earth to block sunlight from
reaching the moon.
Theories:
Heliocentric
• Our star (Sun), the
planets, many moons,
and other small bodies
that ALL travel around the
Sun.
Geocentric
• The idea that the planets
and moons revolve
around the Earth.
Types of Galaxies
• Galaxies are classified by their shape.
• Developed by Edwin Hubble
• 3 Types of Galaxies
– A. Spiral
– B. Elliptical
– C. Irregular
What is a Galaxy?
• Galaxy: A giant structure that contains hundreds
of billions of stars bound together by gravity.
• Spiral Galaxy: A galaxy whose arms curve
outward in a pinwheel pattern. Contains solar
systems and nebulae (gas, new stars, and dust).
• Irregular Galaxy: A galaxy that does not have a
regular shape. They do not fit in another class.
• Elliptical Galaxy: A galaxy shaped like a flattened
ball, containing only old stars, with bright centers
and very little dust/gas
Types of Galaxies
Spiral Galaxy
Our galaxy, The
Milky Way, is a
spiral galaxy
Elliptical Galaxy
Irregular Galaxy