The Sun sets behind a NASA WB-57F Canberra research aircraft
The Sun's corona shines around the intervening Moon during a total solar eclipse
Map showing the circumstances of the August 21, 2017, total solar eclipse
Sakurai's Object
Artist's concept of Giant Magellan Telescope

Update - Solar Eclipse 2017

Get Ready for the Great American Eclipse

A total solar eclipse will take place on August 21. It will cover a narrow slice of the United States, from Oregon to South Carolina. Millions of Americans are expected to travel to the eclipse path, making it the most-viewed solar eclipse in history. More »

StarDate Radio: August 17 — More Eclipse Science

The B-57 Canberra has been taking to the skies since the Korean War. Today, only three of the aircraft remain....More »

StarDate Radio: August 16 — Eclipse Science

Astronomers have been studying the Sun for so long that you might think they know everything there is to know...More »

Stargazing: August 16

Skywatchers along a narrow path across the U.S. will see a rare sight on Monday: the Sun’s corona, its hot,...More »

StarDate Radio: August 15 — Moon on the Move

The Moon will pass by several prominent companions over the next week. Tomorrow, the bright star Aldebaran, the eye of...More »

Stargazing: August 15

The Moon will pass several bright objects over the next week. Tomorrow, bright Aldebaran, the eye of the bull, will...More »

StarDate Radio: August 14 — Solar Eclipse

Check your tires and your gas gauge and get ready to hit the road for nature’s most spectacular sky show:...More »

Stargazing: August 14

A total solar eclipse will take place on August 21. It will cover a narrow slice of the United States,...More »

StarDate Radio: August 13 — Sakurai’s Object

A dying star in Sagittarius isn’t going quietly. A couple of decades ago, it was “reborn” with an intense outburst...More »

Stargazing: August 13

Sakurai’s Object, a dying star in Sagittarius, was “reborn” a couple of decades ago as it began “burning” helium around...More »

StarDate Radio: August 12 — Black-Hole Blobs

The black hole at the heart of the Milky Way galaxy is one of the quietest around. It’s not pulling...More »

Stargazing: August 12

Sagittarius scoots low across the south on summer nights. Its brightest stars form the outline of a teapot, with clouds...More »

StarDate Radio: August 11 — Future Resident

Sagittarius marks the center of our home galaxy, the Milky Way. So the constellation is packed with stars, star clouds,...More »

Stargazing: August 11

The Perseid meteor shower should be at its best the next couple of nights. There won’t be much to see,...More »

Current Magazine

cover of September-October 2017 issue

Cassini’s mission to Saturn is coming to an end in September, and we’ll bring you 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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