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How Does a Star Work?

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The Sun is a star, one of trillions of stars in the Milky Way alone. Our star has a nuclear furnace in its core, where it fuses hydrogen into helium. In the process, it gives off heat and light, just as other stars do. 

Learn More about the Cosmos
Space/Astronomy Spotlight10

Look Deep Into the Universe

Hubble is a cosmic time machine that helps us look back in time and out across space to some of the earliest objects in the cosmos.

Set Your Sights on Pluto

Pluto is a distant and intriguing world in the solar system. Let's visit!

The Sun's Ultimate Fate

The story of how our star dies is different from the stories of its more massive siblings.

September Stargazing Preview

Finding planets just after sunset in September's skies.

The Ever-changing North Pole Star

Introducing our pole star the famous Polaris. It has been the North Pole star for several thousand years.

Digital Astronomy

Looking for astronomy computer programs and apps? This article looks at a few of the many good ones available.

MESSENGER from Mercury

Introducing the smallest planet -- Mercury, and the MESSENGER mission that is exploring it.

Solving the Martian Climate Mystery

An introduction to the Mars MAVEN Mission, set to arrive at the Red Planet in September, 2014.

Interesting Astronomy Terms

Astronomy has some suggestive-sounding terms that are anything BUT risque.

Twin Telescopes Reach Out to the Cosmos

Introducing the Gemini Observatory, two telescopes in two different places.

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