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Physics & Astronomy Facts

Lasers are really useful tools for making measurements.
How Lasers Work

Light is a fascinating thing. Or things, as the case may be. Electromagnetic energy that our eyes have developed to see, light has the same behavior and properties as all other electromagnetic radiati ...
Image of the spiral galaxy NGC 4414
From Here To There

We all know that our galaxy, the Milky Way, is big -- very big. So big in fact that its size is impossible to grasp. To cope with the astronomical distances of galaxies, since miles or kilometers won' ...
WMAP
The Wilkinson Microwave Anisotropy Probe (WMAP)

The cosmic microwave background (CMB) radiation is the radiant heat left over from the Big Bang. It was first observed in 1965 by Arno Penzias and Robert Wilson at the Bell Telephone Laboratories in M ...

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