Loki Patera, the largest volcanic feature on Io
diagram showing future north stars
Enceladus sets behind Saturn
Cassini flies between Saturn and its rings
Powerful solar flare, September 6, 2017

StarDate Radio: September 22 — Autumn

It’s been a scorching summer for much of the country. And while we can’t say whether the scorching is over,...More »

StarDate Radio: September 21 — Moon and Jupiter

A giant lake sits on the surface of Io, one of the big moons of Jupiter. It’s about 125 miles...More »

Stargazing: September 21

The giant planet Jupiter is close to the left of the crescent Moon shortly after sunset tonight. Although it is...More »

StarDate Radio: September 20 — Beta Pegasi

With summer just about ready to give way to fall, one of the signature star patterns of the new season...More »

Stargazing: September 20

With summer about to give way to fall, one of the main star patterns of the new season is climbing...More »

StarDate Radio: September 19 — Alderamin

Cepheus the king passes high overhead tonight. The constellation’s five main stars form a pentagon. None of them is especially...More »

Stargazing: September 19

Cepheus the king passes high overhead tonight. The constellation’s five main stars form a pentagon. None of them is especially...More »

StarDate Radio: September 18 — New Cluster

The brightest planet and star in all the night sky are in good view at dawn right now. The planet...More »

Stargazing: September 18

The brightest planet and star in the night sky are in good view at dawn now. The planet Venus is...More »

StarDate Radio: September 17 — Moon in the Middle

The crescent Moon starts the week as the centerpiece of a beautiful morning lineup tomorrow. It’s flanked by four pinpoints...More »

Stargazing: September 17

The Moon starts the week at the center of a beautiful morning lineup. It’s flanked by four points of light...More »

StarDate Radio: September 16 — Moon and Venus

Venus is a world you probably wouldn’t want to visit. When the solar system was young, though, it could have...More »

Stargazing: September 16

Venus is shining as the brilliant “morning star.” Tomorrow, it will stand close to the lower left of the Moon...More »

Current Magazine

cover of September-October 2017 issue

Cassini’s mission to Saturn is coming to an end in September, and we've provided an overview of what it has uncovered about the planet, its beautiful rings, and its retinue of dozens of moons, including massive and mysterious Titan.

2017 Sky Almanac

2017 Sky Almanac

The year may be more than half over, but plenty of stargazing adventures are still ahead. Find out about all of them in our 2017 Sky Almanac issue, which offers skywatching tips, charts, Moon phases, and much more. And we've reduced the price to $4, which is almost half off the cover price. Order online or call 1-800-STARDATE during regular business hours.

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