The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with more than 200 million individually resolved stars.

For ages 12 and older. How many grains of sand would it take to fill the universe? This is a problem that the Greek mathematician Archimedes tried to solve in the third century B.C. In this ...

We use sand way more than you'd expect. Worldwide ... He wrote a book on the subject, called The World in a Grain. Vince Beiser: "So the sand that we use, is what you call 'marine sand.' ...

Carl Sagan told us that there are more stars in the universe than there are grains of sand on all of the Earth's beaches. At the same time, there are more H 2 O molecules in just 10 drops of water ...

The phenomenon of "singing sand" is actually quite rare, but there's a place in Indiana where you can hear it. Indiana Dunes ...

Meigikos and the physicist Carla Carvalho, a former PhD student of his at the Federal Fluminense University (UFF), only discovered the origin of these sediments after deciphering the history recorded ...