how many stars in the milky way

The Universe and Galaxies: The Starry Sky

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Discovery Space: The Starry Sky Light given off by stars is often outshone by light sources on Earth. Yet, anyone away from the big cities and looking up to the night sky can enjoy the stellar sparkle in all its glory. The sky is full of stars even during the day; however, only one of … Read more

The Universe and Galaxies: Stars

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Discovery Space: Stars Stars are colossal power plants, producing energy in abundance. They are also the source of the chemical elements that make up the planets—and our own bodies. The birth of a star The birth of a star takes place in a gigantic cloud of gas. Stars differ in mass, color, and brightness, but … Read more