The Last Light Before Eternal Darkness – White Dwarfs & Black Dwarfs Explained

One day, everything will end, even the universe. But before that happens, stars will start dying one after the other. The last ones to remain will be white dwarfs, the corpses of stars, which will continue burning for a long, long time before finally becoming Black Dwarfs. [Kurzgesagt – In a Nutshell]

What Do Electrolytes Actually Do? [Science Video]

Sports drink commercials love talking about them, but what are electrolytes, why do we need them, and what happens if we don’t have enough? Electrolytes are salts that, once in our bodies, help our cells move water around. They also enable the nerve impulses that keep our hearts beating, our lungs breathing and our brains […]

How Do We Know The Universe Is ACCELERATING? [Science Video]

The universe is expanding – this we know from looking at red shifts 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 […]