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StarDate Radio: April 24 — Moon and Venus

Many skywatching treats require either some knowledge of the night sky or some careful work to track them down. More »

StarDate Radio: April 23 — Time Bombs

Several ticking time bombs are in view as darkness falls this evening. More »

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Stargazing: April 23

Several time bombs are in view this evening. The list includes most of the bright stars of Orion, which is low in the west, plus Spica, the brightest star of Virgo, in the southeast. All of these stars are destined to explode as supernovae. More »

StarDate Radio: April 22 — Space Fair

NEWSREEL: Everyone is counting the days until the opening of the great New York World’s Fair — an exposition symbolized by the Unisphere, that dominates the grounds. More »

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Stargazing: April 22

It’s lonely here in the galactic suburbs. The distance to the Sun’s nearest stellar neighbor, Proxima Centauri, is almost 29 million times the Sun’s diameter. At that scale, if you lived in a house that is 50 feet wide, your nearest neighbor would be farther than the Moon. More »

StarDate Radio: April 21 — Emptiness

It’s lonely out here in the galactic suburbs. More »

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Stargazing: April 21

The Moon will be at last quarter tonight. It aligns at a right angle to the line between Earth and the Sun, so sunlight illuminates one-half of the lunar hemisphere that faces our way. More »

StarDate Radio: April 20 — Lyrid Meteor Shower

The mild nights of spring are generally a good time for skywatching. More »

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Stargazing: April 20

The Lyrid meteor shower should reach its peak tomorrow night. Under a dark sky, you might see up to a couple of dozen meteors per hour after midnight. The number of meteors increases closer to dawn, as your part of Earth turns into the meteor stream. More »

Special Features

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

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