Twitter now has a totality emoji to celebrate the solar eclipse

While the sun is actually about 400 times larger in diameter that the moon, the moon is also about 400 times closer than the sun. What you will see in the middle of the event will vary enormously depending on where you are located, but from every vantage point in the USA the moon will slowly cross the sun for about 80 minutes.

Click play to watch the Do's and Don't for the upcoming solar eclipse.

Some retailers have pairs remaining, but if you don't happen to find a pair, you can safely make an eclipse-viewer at home.

Where will you be watching the solar eclipse?

It's complicated. You can photograph the event, but you risk damaging your equipment and your eyes.

The Great American Eclipse, which will take place on August 21, is a once-in-a-lifetime event - not since 1918 has a total solar eclipse swept across the United States.

The sun is a huge ball of gas - mostly hydrogen, some helium - that, from earth, looks like a neatly-drawn circle. Everyone can then view the spectacle with their backs to the Sun, which is the safest way for kids (and more social for everyone). And NASA's coverage will be available from on the ground and in the sky - including from the International Space Station - with options for 4K resolution and 360-degree video.

Gazing directly at the sun can cause a permanent blind spot to form on the retina of your eye. You know, the kind you use to drain pasta. It's just not a good idea. Make sure you deal directly with a bus or limo company to avoid scammers using a legitimate business as a front.

The Hilton and Marriott hotels along the eclipse's prime viewing area, known as the path of totality, are almost full, the companies told ABC News. More information on the solar eclipse can be found here. You'll need special viewing filters designed for occasions like this. That eclipse will be visible from Northern California to Florida, according to NASA.

On its website, NASA also has a list of reputable retailers from whom you can purchase a range of eclipse viewers, and states where some are sold out.

The federal government has warned people to only use new devices. You can do the same thing with a telescope (or go one better and build a sun funnel).

Check your ISO setting.

They're creating pin-hole cameras. Teachers say they've been incorporating the coming eclipse into lesson plans, from science classes to english - and from kindergarten to high school. The inner corona is far brighter than the outer corona thus, no single exposure can capture its full dynamic range.

As of Tuesday, the group had almost exhausted their supply of glasses reserved for the community, according to Chen, and 34 individuals indicated that they plan to attend the viewing, with 46 others expressing interest.

After the August 2017 solar eclipse, the U.S. will see another solar eclipse on October 14, 2023.

Finally, you should remember that lots of professional photographers will be taking photographs that you could probably buy or view later.

  • Carolyn Briggs