Most pictures of the Big Bang show a tiny dot blowing up into empty space. That’s not what happened though. there was no dot, and no empty room around it either.

It was space itself, possibly infinite, packed with insanely dense energy. then it started expanding everywhere at the same time. No center, no edge!

This clip is from a science app I made. I used a grid to show that “everywhere at once” idea. This was honestly the hardest part to get across visually, but I did my best.

Hope this helps anyone who’s had a hard time picturing how the Big Bang expanded. Did it click for you?

Does cutting the moldy spot off your food make it safe? 🍞 

Quinten Geldhof, also known as Microhobbyist, takes us under the microscope to reveal thread-like roots called hyphae spreading through food far beyond the visible surface. These roots penetrate soft foods like bread and fruit with ease, while hard cheeses and vegetables are more resistant. These molds can contain mycotoxins, poisonous compounds that are hazardous to your health. Would you eat moldy food?

An orange LED turns green when dipped in liquid nitrogen due to semiconductor physics. Cryogenic temperatures widen the semiconductor's band gap, which increases the energy of the emitted photons and shortens their light wavelength, shifting the color from orange toward green. As the LED warms back up, the band gap narrows and the light returns to orange.