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Page |
Article |
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10 |
How Rare are Extraterrestrial Civilizations
and When Did They Emerge? Mario Livio
Don't dismiss the notion of extraterrestrial civilizations too
quickly - a piece of current research does not prove other civilizations
are out there, but it does neatly suggest that the Galaxy may
be in full life bloom. |
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14 |
Traversing the Galactic Darkness: The
Interstellar Matters of Extraterrestrial Transmissions, James
M. Cordes
Signals from other civilizations in the Galaxy are usually conceived
to be electromagnetic and to contain some level of encoded information,
yet those signals' propagation through the interstellar medium
smears such information and makes the task of communication
even more difficult. |
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20 |
A
Biologist's View on Life Out There, John Aguiar
A multitude of stars in the Galaxy, and increasingly it looks
as if many of them harbor worlds. But what of life on those
worlds? First we must consider the nature of life on our own. |
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26 |
The View From
a Distant Star: Challenges of Interstellar Message-Making,
Douglas A. Vakoch
In the absence of knowledge of physical and cultural clues,
communication between two species can be almost impossible.
Almost. |
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Departments
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| 2 |
Editorial,
James C. White II
Out
of the Dark Blue |
| 4 |
Letters
to the Editor |
| 6 |
Echoes
of the Past, Katherine Bracher
Comet Kohoutek |
| 7 |
Education Newswire,
Leo P. Connolly
Astronomy information for educators. |
| 8 |
Accidental Astrophysics, Eric M. Schlegel |
| 9 |
Astronomer's Notebook, Christopher
J. Conselice
Large vs. Small Optical Telescopes |
| C1 |
SkyChart and SkyTalk, Robert A. Garfinkle |
| 33 |
Commentary,
Ryder W. Miller
To Explore and to Protect |
| 35 |
Last
Page, William Doria
The Psychological Imperative to Explore |
