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OUR COSMIC OUR COSMIC ADDRESSADDRESS
Each of us has an address. Ours is:
The Denver Museum of Nature and Science2001 Colorado Blvd.
Denver, Colorado 80205-5798
But what is our cosmic address?
OUR COSMIC OUR COSMIC ADDRESSADDRESS
The Earth is the third planet from a star we call our sun, or Sol. The sun, its planets, their moons, and other bodies constitute our solar system.
OUR COSMIC OUR COSMIC ADDRESSADDRESS
The nine planets of the solar system in order from the sun. The relative sizes are accurate, but relative distances from the sun are not.
Sun
MercuryMercury Venu
s
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
OUR COSMIC OUR COSMIC ADDRESSADDRESS
The Earth is one Astronomical Unit or 1 AU from the Sun.
One AU equals about 93,000,000 miles, or 150,000,000 kilometers.
1 AUSUNEARTH
OUR COSMIC OUR COSMIC ADDRESSADDRESS
Distances of the Planets from the Sun
Mercury .0387 AU / 35,419,000 miles
Venus .7233 AU / 67,242,000 miles
Earth 1.0 AU / 93,000,000 miles
Mars 1.524 AU / 141,600,000 miles
Jupiter 5.203 AU / 483,800,000 miles
Saturn 9.539 AU / 890,000,000 miles
Uranus 19.9 AU / 1,783,169,440 miles
Neptune 30.06 AU / 2,790,000,000 miles
Pluto 39.53 AU / 3,647,200,000 miles
OUR COSMIC OUR COSMIC ADDRESSADDRESS
Our solar system extends to where the solar wind ceases to be of any significant influence.
This boundary is called the Heliopause.
HeliopauseVoyager 1
Voyager 2
OUR COSMIC OUR COSMIC ADDRESSADDRESS
This is a Hubble Space Telescope view of a spiral galaxy similar to the Milky Way.
The Milky Way Galaxy is
about 586,000,000,0
00,000,000 (586
quadrillion) miles, or
6,300,000,000,000 (6.3
trillion) AU, or 97,800 light
years in diameter.
OUR COSMIC OUR COSMIC ADDRESSADDRESS
http://
NCG 6369, “The Little Ghost,” is a dying star NCG 6369, “The Little Ghost,” is a dying star that is between 2000 to 5000 light years from that is between 2000 to 5000 light years from Earth.Earth.
As we go further out from the Sun, the distances get so vast that we
must use a larger unit of
measurement -- light years.
OUR COSMIC OUR COSMIC ADDRESSADDRESS
Light travels at 186,291 miles per second!
It takes light 8½ minutes to travel from the Sun to Earth. That’s a distance of 1 AU or
93,000,000 miles.12 light year long jet
emanating from a newborn star
A light year is the distance light travels in one year. In
one year, light travels 64,000 AU, or
6,000,000,000,000 (6 trillion) miles.
OUR COSMIC OUR COSMIC ADDRESSADDRESS
•Our galaxy (the Milky Way) is about 100,000 light years in diameter.
•The nearest star is 4.3 light years away.
•The distance to the most distant object seen in the universe is about 14 billion light years (14 x 109 light years).
•Looking at light that reaches us from many light years away is also looking back in time because that light left its source long ago.
OUR COSMIC OUR COSMIC ADDRESSADDRESS
Where in the Universe is the Milky Way Galaxy?
Faraway Galaxies, Hubble Ultra Deep Field Image: NASA
OUR COSMIC OUR COSMIC ADDRESSADDRESS
Our Galaxy is located in a small cluster of some 40 galaxies, including
the Andromeda galaxy and the
Magellanic clouds, called the Local
Group.
The Local Group is located in the Local
Super Cluster.
OUR COSMIC OUR COSMIC ADDRESSADDRESS
The Local Group is part of the Local
Super Cluster, which is moving towards
an unseen and undetected mass, called the Great Attractor, at the
approximate speed of 1,342,224 miles
per hour.A view towards the Great Attractor
OUR COSMIC OUR COSMIC ADDRESSADDRESS
THE DENVER MUSEUM OF NATURE AND SCIENCE2001 Colorado Blvd.
Denver, Colorado 80205-5798United States of America
Planet EarthSolar System
Solar NeighborhoodMilky Way Galaxy
Local GroupLocal Super Cluster
Near the Great AttractorUniverse
Outer Galactic BeingLocal Super ClusterUniverse
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