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Physics & Astronomy Facts

Fission and Fusion

In the nuclear fission process, a heavy atomic nucleus spontaneously splits apart, releasing energy and an energetic particle, and forms two smaller atomic nuclei. While this is a normal, natural proc ...

What Is Polarimetry?

Polarimetry is the technique of measuring the 'polarization' of light. Most of the light we encounter every day is a chaotic mixture of light waves vibrating in all directions. Such a combination is k ...


NASA's Hubble Space Telescope has taken a 'family portrait' of young, ultra-bright stars nested in their embryonic cloud of glowing gases. The celestial maternity ward, called N81, is located 200,000 ...

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