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Solar eclipse safe viewing tips

If you’re planning to watch the August 21 total solar eclipse (and we hope you are!) take a minute to watch this video on how to watch safely.

The enduring mystique of Barnard’s Star

Sometimes called Barnard’s Runaway Star, it’s one of the best known stars in the history of astronomy and in popular culture.

How much traffic on eclipse day?

Expert analysis showing how many people – and how much traffic congestion – can be expected along the path of the August 21, 2017 total solar eclipse.

NASA’s plans for August 21 eclipse

Not traveling to the centerline of the eclipse? Expect NASA images via 11 spacecraft, at least 3 aircraft, more than 50 high-altitude balloons, and the International Space Station.

Saturday night’s extremely young moon

Photo and animation of an extremely young moon – only 18 hours past the new phase – setting over a hill last night, as seen from Rio de Janeiro, Brazil.

What’s the youngest moon you can see?

In 2013, an astrophotographer in France captured an amazing photo of the moon at the precise instant of new moon.

The eclipse is just 2 lunations away

As we approach another new moon, astronomer Guy Ottewell shares his profound understanding of lunar cycles and the coming total solar eclipse.

What’s a conjunction?

EarthSky community member Tom Wildoner explains the term “conjunction” in astronomy and provides an illustration.

Star of the week: Alphecca

Alphecca. Gemma. Alpha Coronae Borealis or simply Alpha Cor Bor. They’re all names for one star – the brightest star in the constellation Northern Crown.

Sun moves in front of Gemini on June 21

On June 21, 2017, at around 15:00 UTC, the sun moves out of the constellation Taurus and into the constellation Gemini the Twins.

All you need to know: June solstice 2017

It’s that beautiful time of year again in the Northern Hemisphere, when the June solstice – your signal to celebrate summer – is nearly upon us.

Summer solstice tale of 2 cities

On the June solstice, the sun sets at the same time in New York City and St. Augustine, Florida. But New York has an hour more of daylight. How’s that happen?

Slowest sunsets around solstices

Here’s a natural phenomenon you might never have imagined. That is, the sun actually sets more slowly around the time of a solstice.

Does the North Star ever move?

It’s a symbol for constancy, but, if you took its picture, you’d find that the North Star makes its own little circle around the sky’s north pole every day.

Are asteroids hiding among the Taurids?

And, more to the point, are any asteroids that might be hidden in the Taurid meteor stream potentially hazardous to Earth?

10 space objects to see daytime

A rundown of the top 10 space objects you can see – under the right conditions – during the day.

The Guardians of the Pole

Kochab and Pherkad – 2 stars in the Little Dipper – are called Guardians of the Pole. How to find them and more.

Is Zubeneschamali green?

Although some scientists claim stars can’t look green, many stargazers will swear that Zubeneschamali proves otherwise.

What’s it like to see a total solar eclipse?

Words often fail when trying to explain the kaleidoscope of sights, sounds, feelings and emotions that consume us during this other-worldly event.

How much moon do we see?

One side of the moon always faces Earth. Even so, over time, it’s possible to see as much as 59% of the moon’s surface, due to lunar libration.