Science, Technology, and Social Media

How Do We Know The Universe Is ACCELERATING?

The universe is expanding – this we know from looking at redshifts of distant galaxies – but the acceleration of the universe’s expansion is harder to measure. It requires measuring the change of recession velocity over time, and it’s done by comparing Type Ia supernovas as standard candles at different distances, which is how we know the universe is accelerating!

Duncan Idaho

Duncan is a science and technology reporter for CDN and serves as the lead geek correspondent. Follow him if you like rockets, mobile tech, video games or ... just about anything nerdy.

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