Today, glass is used to make many things. Windows, milk bottles, mirrors, doors for buildings, light bulbs, computer screens and many other things are made of glass. Glass is made by melting several minerals together at very high temperatures. Actually,
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A nebula is a huge, diffuse cloud of gas and dust in space. The gas in nebulae is mostly hydrogen gas -- H2. Scientists believe that new stars form inside of nebulae. There are many kinds of nebulae such as Emission Nebulae, Reflection Nebulae, Planetar
here is not just one answer to this question. This is because not all fish have been tested for color vision. But according to scientists, the goldfish and many other fish can see in color. Color vision is the ability to see objects based not on how bri
Galaxies are huge collections of stars, dust and gas. They usually have several million to over a trillion stars. The distance across them is very great. And it can be several hundred thousand light years!
Stem cells are the body’s master cells. They are sometimes called “magic seeds.” This is because they are the basic building blocks of all tissues, organs and systems in the human body. Stem cells are special cells. They can turn into many different ce
Cats’ eyes glow in the dark. Also, many other animals that hunt at night have eyes that glow at night. So, why do their eyes appear to glow when a light shines on them? The glow that you see is light reflected from a mirror-like structure in their eyes.
If you look up in the sky, you can see beautiful clouds. Clouds form when water vapor condenses onto tiny dust particles floating in the air. The cloud formation happens when warm and cold air meet? when warm air rises up the side of a mountain and
Red dwarf stars are small stars. Some of them are a hundred times smaller than the sun. Because of their small size, these stars burn their fuel very slowly. So, they can live a very long time. Surprisingly, some red dwarf stars can live trillions of year
The Solar System is made up of all the planets that orbit the Sun. The Solar System also consists of moons, comets, asteroids, dust and gas. Everything in the Solar System orbits around the Sun.
We are living on Earth. But how much do you know about it? This week, let's learn more about our planet. The Earth is the third planet in order from the Sun. It is about 150 million kilometers from the
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