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light speed

WHAT IF: Light Speed Were Slower?

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Laser Light - Pixabay

Every Wednesday, we’re asking a what-if question – how would our world be different if something were changed? Today’s question is from Life Science: Light is the fastest-moving thing in the universe. So what would happen if the speed of light were much, much slower?  See Live Science’s take here. Share your serious scientific analyses, your off-color jokes, and random thoughts on the topic on our FB and MeWe Groups: FB: http://bit.ly/1MvPABV MeWe: http://bit.ly/2mjg8lf

SPACE: Crossing the Milkyway

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Milky Way

The disk of our home galaxy – the Milky Way – is bigger than we previously thought. A new study shows it would take 200,000 years for a spaceship traveling at the speed of light to go across the entire galaxy. Researchers made the find after analyzing the abundances of metals (heavy elements) in stars, also known as their metallicities. When looking beyond the previously assumed boundary of the Milky Way’s disk, scientists were surprised to see stars with compositions resembling those of disk stars. “We have shown that there is an appreciable fraction of stars with higher metallicity, characteristic … Read more