What is the cost of a spacesuit?

NASA scientists spend $12,000,000 to make each space suit used for extravehicular operations.

What would happen if a coin-sized black hole appeared on Earth?

In general, it would take five billion years for such a black hole to swallow the Earth. It could significantly increase the mass of the Earth.

And, of course, it would immediately create a total mess on the planet, turning it into an uninhabited space scrap of collapsing…Read More