Lynx in the west, late May
A ring of rubble encircles the star Fomalhaut
Hubble Space Telescope image of galaxy cluster Abell 370
HST view of 47 Tucanae
Io and Jupiter

StarDate Radio: May 26 — Heading North

While the Moon orbits Earth and Earth orbits the Sun, the Sun isn’t exactly standing still. In fact, it’s racing...More »

StarDate Radio: May 25 — Lynx

Johannes Hevelius saw things that no one else did. Perhaps that was because he had a vivid imagination. Or perhaps...More »

Stargazing: May 25

The faint constellation Lynx is in the west and northwest at nightfall. It’s above Pollux and Castor, the twins of...More »

StarDate Radio: May 24 — Radio Power

A project known as Breakthrough Starshot hopes someday to use a powerful beam of energy to propel a tiny probe...More »

Stargazing: May 24

The Moon will be “new” tomorrow as it passes between Earth and Sun, so it will be hidden in the...More »

StarDate Radio: May 23 — Closing In

[AUDIO: FRB “chirp”] That sound comes from a distant galaxy — perhaps from the corpse of a once-mighty star. It’s...More »

Stargazing: May 23

The twins of Gemini are dropping feet-first toward the western horizon as night falls. One of those feet is marked...More »

StarDate Radio: May 22 — Spying on Supernovae

A project that’s beginning this month will compile dossiers on hundreds of supernovae. That should give astronomers a better picture...More »

Stargazing: May 22

Vulpecula, the fox, rises in late evening. The constellation is quite faint. Its brightest star — a red giant more...More »

StarDate Radio: May 21 — More Moon and Venus

For the first three decades of the Space Age, Venus was the belle of the ball. Through the 1980s, the...More »

Stargazing: May 21

The planet Venus, which blazes as the “morning star,” perches quite close to the crescent Moon at dawn tomorrow. Venus...More »

StarDate Radio: May 20 — Moon and Venus

There’s no air on the Moon, so there’s no wind or rain to alter the surface. Yet the Moon does...More »

Stargazing: May 20

Look for the Moon before sunrise tomorrow, with Venus, the “morning star,” to its lower left. Despite its moniker, Venus...More »

Current Magazine

cover of May-June 2017 issue

In May/June, we bring you our special Summer Reading Issue, in which we recommend new books. We’ve got feature-length excerpts from four new books in astronomy and space science, plus astronomy news, skywatching tips and charts, and Merlin's answers to your questions.

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