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StarDate Radio: July 8 — Pluto’s Moons

In 1978, astronomer James Christy was looking at some photographs of Pluto when he noticed something odd: The little world seemed to have a “bump” on its side. More »

StarDate Radio: July 7 — Pluto

ALAN STERN: Our knowledge of Pluto is quite meager....We know very, very little about this world....It’s very much like our knowledge of Mars was before the first mission to Mars.

Alan Stern heads the first mission to Pluto, known as New Horizons. More »

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Stargazing: July 7

A wedge-shaped pattern of stars known as the Keystone stands high overhead late this evening in Hercules. It stands to the upper right of Vega, one of the brightest stars in the summer sky. More »

StarDate Radio: July 6 — Kuiper Belt

Three of the solar system’s “big guys” are in great view this evening. More »

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Stargazing: July 6

If the Sun were to suddenly wink out of existence (which is impossible, by the way), we wouldn’t know it for more than eight minutes. The Sun is 93 million miles away, and it takes light more than eight minutes to cross that distance. More »

StarDate Radio: July 5 — Earth at Aphelion

You’ve probably never noticed it, but the Sun appears to change size a little bit over the course of a year. More »

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Stargazing: July 5

Earth will stand farthest from the Sun for the entire year tomorrow afternoon, at a distance of more than 94 million miles, or about three million miles farther than we were in January. More »

StarDate Radio: July 4 — Fireworks

The Fourth of July is a time for beautiful lights in the evening sky. More »

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Stargazing: July 4

A pair of brilliant lights are in good view well before twilight drains from the western sky this evening. The planets Venus and Jupiter stand side by side. Venus is the brighter of the two. Regulus, the heart of Leo, stands close to their upper left. More »

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The History of the Telescope Hobby-Eberly Dark Energy Experiment
Black Holes Encyclopedia Texas Native Skies

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