The beautiful “morning star” shines above the crescent Moon at dawn tomorrow. It’s not a star at all, though —...More »
▶StarDate Radio: October 16 — Moon and Mars
Earth’s geologic history is divided into several eras. Today, we’re in the Cenozoic era, which began about 66 million years...More »
★Stargazing: October 16
The planet Mars is in good view at dawn tomorrow. It stands to the right of the crescent Moon, and...More »
▶StarDate Radio: October 15 — Monster Galaxy
Astronomers got quite a surprise recently. What they thought was a fairly ordinary galaxy turned out to be one of...More »
★Stargazing: October 15
The Andromeda galaxy is in good view right now. Tonight, it’s in the east-northeast as darkness falls, and overhead later...More »
▶StarDate Radio: October 14 — Moon and Regulus
Regulus is a big star — it’s three times the Sun’s diameter. Even so, the heart of the lion will...More »
★Stargazing: October 14
Regulus will wink out of sight early tomorrow across most of the U.S. The star will be covered by the...More »
▶StarDate Radio: October 13 — Capricornus
The roster of constellations includes some weird and wonderful creatures. There’s a dragon, a unicorn, and two centaurs. But perhaps...More »
★Stargazing: October 13
Capricornus, the sea-goat, is low in the southern sky as darkness falls at this time of year. Its brightest stars...More »
▶StarDate Radio: October 12 — Protecting Earth
When a double asteroid swings close to Earth in 2024, it just might get a nasty reception. NASA is studying...More »
★Stargazing: October 12
The Moon is at its last-quarter phase at 7:25 a.m. CDT, so sunlight illuminates half of the lunar hemisphere that...More »
▶StarDate Radio: October 11 — Tracking Trouble
A small asteroid will pass about 30,000 miles from Earth late tonight. Astronomers are tracking it to learn more about...More »
★Stargazing: October 11
Asteroid 2012 TC4 will pass about 30,000 miles from Earth tonight. Astronomers are tracking it to learn about the asteroid...More »
Current Magazine
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
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.
