Welcome To….. Welcome To…..

The Trick is to Pick!

THE SUNTHE SUN

Sun vs. EarthSun vs. Earth

AnswersA. 109 times smallerB. The Earth Stress Ball

Over 1 million Earths would fit inside the SunThe average distance from the earth to the sun is

called an Astronomical Unit (AU) 1 AU = 150,000,000 kilometers or 93

million miles

THE SOLAR SYSTEMTHE SOLAR SYSTEM

The Solar SystemThe Solar System

AnswersA. Scotch Tape RollB. a grain of saltC. a microscopic bacteria

8 planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

The Solar NeighborhoodThe Solar Neighborhood

A grouping of stars “close” to each other

The region of the Galaxy within 32.6 light-years of the sun

Here stars move generally with the sun in its orbit around the center of the galaxy

The Solar NeighborhoodThe Solar Neighborhood

The Solar NeighborhoodThe Solar Neighborhood

AnswerA. a grain of salt

The Milky WayThe Milky Way

The Milky Way GalaxyThe Milky Way Galaxy

AnswersA. Nickel

It takes 250 million years for the Sun to complete one orbit

We are located at the edge of a spiral arm (30,000 light years away from center)

The Local GroupThe Local Group

Contains 3 large spiral galaxies --> Milky Way, Andromeda, and

TriangulumAlso includes a few dozen dwarf

galaxiesGravitationally bound together,

orbiting around a common center of mass

6.5 million light years in diameter

The Local GroupThe Local Group

AnswerA. The big Globe

Local SuperclusterLocal Supercluster

A cluster of many groups of galaxies

Gravitationally bound togetherHowever, local supercluster is

getting bigger with timeIt has a flattened shape

The Local Super ClusterThe Local Super Cluster

Local SuperclusterLocal Supercluster

AnswersA. a small globeB. a quarter

The Entire UniverseThe Entire Universe

Observable Universe is 156 billion light years in diameter

Around 100 billion galaxiesBig and expanding

The Entire UniverseThe Entire Universe

AnswersA. A dimeB. A grain of salt

Sun Vs. PlutoSun Vs. Pluto

A. 669 timesB. Nickle