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A view from Hubble's Deep Field
(NASA)
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When
I asked my wife why the sky is dark at night, she said, "It's
because the sun's not shining!" Yet generations of astronomers
have struggled to answer this question. It's become known as Olbers'
Paradox. Although it's one that few spend time thinking about, for
cosmologists it's always been important.
The darkness of the night sky was one of the earliest
observations that cosmologists could use as a basis for developing
an understanding of the universe. In theory, they knew that even at
night the sky should shine like a curtain of light. Explaining why
it didn't helped cosmology to be seen as a true science that is
based on observation rather than speculation. It was one of the
first observations that helped us realize that the universe is not
infinite either in age or extent.
To light the sky from horizon to horizon with starlight would
require trillions more stars than now exist. Alternatively, we'd
have to be able to look back in time longer than the universe has
existed. The universe is not old enough or big enough to have a
bright night sky. As we look beyond the galaxies and quasars, we
detect only the background cosmic radiation left as a remnant from
the moment of creation, when the sky really did blaze.
So next time you gaze at the night sky, remember you're seeing a
puzzle, whose explanation has helped us understand the universe.
MOVING BEYOND
MATTER
by Debbie Hughes
Sometimes what we don't see is as telling as what is present.
We
look for evidence of what is there, but equally important is what is
absent or lacking. This is negative evidence, but evidence
nonetheless.
A friend of mine is a fairly good artist. When she was learning
to draw, she was rather inept. She had a desire to draw, but little
training in it. She often was dissatisfied with her work.
Yet by the
time I met her, she was a respectable amateur.
One day I asked my friend how she was able to sketch so well.
She
replied that when she was in the early stages of skill development,
an artist suggested that she draw not what was there, but rather
what was absent: not the table but the space around the table.
He said, "Outline the air underneath the furniture. Look at the space
between the legs. Draw these, rather than the table top and the
table legs." When my friend shifted her focus from what was
there to what was missing, she made incredible strides in her
artistic abilities. She began looking at the absent rather than the
present. Her change in perspective gave her abilities to accomplish
what she had wanted to do from the outset.
There has been much debate over the history of humankind about
the existence of a divine being. Arguments have been made for and
against God. These typically are based in philosophy, logical
reasoning, scientific evidences in creation and the nature of
mankind. Today, for example, we talk about Intelligent Design in
creation - how unlikely that everything (from quirks to quarks to
quasars) came to be by chance. Thinkers of earlier ages
considered that creation must have a Creator, that which is caused
must have a Cause, that which moves must have a Mover.
These arguments challenge us to wrestle with the idea of the
existence of God. And if we accept that God is the creator and
sustainer of life, then it would be wise to consider what He expects
of us. No one makes something for no purpose at all. Since
God made us for a purpose, let's find out what it is and get on with
living it.
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