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Physics & Astronomy Facts

Series of images over time of the light echo from the star known as V838 Monocerotis or V 838 Mon.
Light Fantastic

On the next hot summer day, imagine what would happen if the Sun suddenly became one million times brighter. Ice cream would quickly melt, sunscreen lotion wouldn't work very well, and that's just the ...
NASA
Live Fast, Blow Hard, and Die Young

Massive stars lead short, yet spectacular lives. And, they usually do not go quietly, instead often blowing themselves apart in supernova explosions. Astronomers are curious about the details of the f ...
Sunset over west Maui
The Color of The Sunset

Color in the form of pigment does not exist in the atmosphere. Instead, the color we see in the sky results from the scattering, refraction, and diffraction of sunlight by particles in the atmosphere, ...

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