Guide to the Cosmos

Making the Wonders of our Universe
Accessible to Everyone

Robert L. Piccioni, Ph.D.

Celestial Images
page 1

Celestial Images
page 2
page 3

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Our Sun
Our Sun
Small dot indicated by arrow is added
to show the size of Earth.

Sombrero Galaxy
Sombrero Galaxy
contains 900 billion stars and
is 28 million light-years away.

Hubble Ultra Deep Field, HUDF, image
contains over 10,000 galaxies and reaches 97% of the way to the edge of our observable universe.

Wilkinson Microwave Anisotropy, WMAP
image of our universe when it was 375,000 years old, 36,000 times younger than it is today.

Mice Galaxies
Mice Galaxies
after their initial collision and
before their final merger.

Perseus Cluster
Perseus Cluster
contains over 1000 galaxies. Each of the fuzzy objects is an immense elliptical galaxy with a trillion stars.

Cigar Galaxy
Cigar Galaxy
 exploding after close encounter with larger galaxy.

Cygnus Supermassive Black Hole
Supermassive Black Hole in Cygnus A
is one billion times the mass of our Sun. The central dot is the accretion disk surrounding the black hole, from which two jets emerge and span 500,000 light-years.

our Milky Way Galaxy
A computer reconstruction of our galaxy,
the Milky Way,
which contains 300 billion stars,
with the Sun's position indicated.

Blue Marble - Earth
Remarkable "Blue Marble", our Earth.

Celestial Images, page 2
Celestial Images, page 3