Supermoon evokes the enthusiasm of sky watchers in the Washington area –

Supermoon evokes the enthusiasm of sky watchers in the Washington area


A few minutes after midnight on Monday morning in Washington, with the bright full moon almost directly on his head, it seemed necessary to rethink a position between those who mocked the idea of ​​a "supermoon" and those who marveled at the sight of it.

This was the first, last and only super moon of 2017. The title is granted when the moon is full at the time of its closest approach to Earth in a particular orbit.

When full, the moon is obviously brighter than when part of it lies in the shadow. And it is not so much the knowledge of astronomy as common sense that orders a moon that is closer to the earth to be brighter than the moon.

Then, when the brightness of the full moon coincides with the brightness of an "unusual Moon, why not call it a" super moon "?

Well, the debate, as it is, involves an appreciation of the numbers involved How much larger does the moon appear when it is at its closest approach point? How much brighter is the full moon when seen when approaching its orbit?

It is not so much about the actual quantities. Those can be measured, and most people seem likely to accept them.The Sunday moon has been described as 7 percent larger, as a result of its proximity.

And a moon with a diameter approximately 7 times a hundred percent larger, it should appear 14 percent brighter, the brightness will depend on the illuminated area of ​​the moon, that depends on the square of its radius.

Even if a 7 percent increase in radius or diameter is difficult to detect, can it be detected r a 14 percent increase in brightness with the naked eye?

Some would probably say yes. Others may be less secure. Some subjectivity is inevitably involved.

Several people posted their responses on Twitter on Sunday night. They seemed impressed by the supermoon. Perhaps this was at least partly because they had seen the moon relatively soon after it began to rise.

The moon seems larger when it is lower.

A tweet published under the name of Donna Claycomb Sokol seemed unmistakable.

Stop what you are doing, "he said," and please go out and see the moon.

"It's magnificent."

In another tweet, this one that appears with the name of Alana Alsop, was clear and concise in its evaluation of the lunar spectacle. "Georgeous," he said.

Another tweet, published under the name of Dionisios Favatas, described the supermoon as "illuminated heavens".

In addition, the tweet indicated that the vision could have a value beyond the merely aesthetic. [19659003] "Something to distract us from all the political news," he said.

Another tweet ironically demonstrated the ability of the moon to stimulate the imagination.

In a tweet published under the name of Jacob Harris, a language The warning was issued: "Remember that a supermoon means superhero" said "Be careful tonight".

Anyone who missed Sunday night may see a fairly similar repeat on Monday night, experts said.

Meanwhile, as was seen earlier on K Street early Monday, the moon may not look much bigger than normal. However, it was brilliant. If you did not know anything about any supermoon, you would have wondered how they increased the brightness.

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