Anchorage, Alaska: Less Light Pollution from High-tech Street Lights—Yay!

From: Anchorage Daily News

The color of night is about to change.

In a move expected to save millions, improve nighttime visibility and make it easier to see the stars, the city plans to phase out its 16,500 pinkish-orange streetlights and replace them with energy-efficient white lights. In this northern metropolis, where residents live so much of their lives under artificial light, the switch means seeing everything differently.

“The one thing about the orange light, it makes everything fuzzier. White light, it makes everything crisper,” said Nancy Clanton, a Boulder, Colo., street lighting expert helping with the new lighting plan.

Light planners are also looking at ways to make street light more precise. What if lights dimmed slowly, responding to the rising sun? Is there a way to keep them from shining into bedroom windows? How many subtle undulations of northern lights could we see if we dampened Anchorage’s nighttime glow?

The city’s light replacement plan, one of the most ambitious in the nation, … would probably happen gradually as traditional lights burn out…. Streetlights burn out every three to four years.

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Total Energy of the Stars in the Universe!

From: A Creationist’s Challenge To Evolutionists

The earth receives an incredible amount of energy from the sun, even though the sun is 93,000,000 miles away. Yet the earth only receives one part in 2 trillion of the sun’s total energy.

And since the sun is only an average star among the 100 trillion billion* stars in the universe, the total energy in all these stars is absolutely beyond human comprehension.

( I have read that the number of stars is greater than the number of grains of sand in every beach and desert in the world! )

* * *

* 100 trillion billion stars = 100 trillion x 1 billion

or

100,000,000,000,000 x 1,000,000,000

or

100,000,000,000,000,000,000,000

or

10 to the 23rd power

So the total energy of the stars in the universe

is about the power of 100,000,000,000,000,000,000,000 suns!

Or is even greater than

if all of the grains of sand in the world

would each emit the power of the sun

simultaneously!

Lower portion is © 2007 Jeff Fenske – copy freely

Related:

How much energy does the Sun produce in a single second?

Scientists Find 200 Sextillion More Stars in the Sky — The new estimate is 300,000,000,000,000,000,000,000!

Star Size Comparison HD

Photo: God’s Universe: Our Milky Way–90° Panorama