#annular

Drawing one model was both painful but fun at the same time

I saw this image a while ago and it just spoke to me

Omen

The 2023 and 2024 Solar Eclipses: Map and Data

Released Wednesday, March 8, 2023

This map illustrates the paths of the Moon’s shadow across the U.S. during two upcoming solar eclipses. On October 14, 2023, an annular solar eclipse will cross North, Central, and South America, creating a path of annularity. An annular solar eclipse occurs when the Moon passes between the Sun and Earth while at its farthest point from Earth. Because the Moon is farther away from Earth, it does not completely block the Sun. This will create a “ring of fire” effect in the sky for those standing in the path of annularity. On April 8, 2024, a total solar eclipse will cross North and Central America creating a path of totality. During a total solar eclipse, the Moon completely blocks the Sun while it passes between the Sun and Earth. The sky will darken as if it were dawn or dusk and those standing in the path of totality may see the Sun’s outer atmosphere (the corona) if weather permits.

Making the Map

This map uses datasets from several NASA missions. The eclipse data were calculated by visualizer Ernie Wright using elevation information from SRTM, lunar topography from LRO, and planetary positions from the JPL DE421 ephemeris. The lead visualizer, Michala Garrison, used Earth imagery from NASA’s Blue Marble Next Generation to create the terrain map. Likewise, nighttime Earth imagery from NASA’s Black Marble were used along the path of the 2024 total solar eclipse.

Reading the Map

The dark paths across the map are where the largest area of the Sun will be covered by the Moon. People in these paths will experience either an annular or total solar eclipse. Inside these dark eclipse paths are irregular ovals that delineate the Moon’s shadow on the Earth’s surface. For an annular solar eclipse, these ovals are called the antumbra and together make up the path of annularity. For a total solar eclipse, the ovals are called the umbra and create the path of totality. On the map, the ovals contain times inside corresponding to the shape of the Moon’s shadow cast at that time during the eclipse.

Also within the dark paths are duration contours. These delineate the length of time annularity or totality will last. The closer to the center of the solar eclipse path, the longer it will last. For the annular path, times range from a few seconds on the outer edge to a maximum of around 4.5 minutes in the center. For the total path, times range up to 4 minutes.

Outside the eclipse paths, the map displays contours of obscuration, or percentage of the Sun’s area covered by the Moon. Readers can trace the lines to percents printed along the left and top of map for the 2023 annular solar eclipse and along the right and bottom for the 2024 total solar eclipse. Notice how the 2024 total solar eclipse has a higher maximum percentage because the Moon will completely cover the Sun’s surface.

The solar eclipse from June 10, photographed from a fishing pier in Connecticut, USA!

A solar eclipse happens when the moon comes in between the sun and earth, partially (or fully) blocking the sun. This eclipse was annular, meaning that the moon didn’t fully block the sun- during the full phase it covered the middle but not the edges, creating a ‘ring of fire’ look to it!

Was anyone else able to catch it?

Annular Solar Eclipse

As I understand it, the annular solar eclipse happens when the moon is at its farthest point from earth. This can create a “ring of fire” eclipse that sounds like it would be quite wonderful to see. Of course, the “ring” would only be seen if one was in the area of total eclipse, which I was not. But, this morning, I was able to shoot this partial eclipse: Grand Traverse Bay, West Arm, Traverse City, Michigan.

Annular...

To the edge yet further away. A ring of fire burns around the perimeter. Not close enough, not to be deceived as bigger than a awesome heavenly body. Your orbit draws you in, come to a warm embrace. The Earth pulls but the Sun pulls harder. In the sky see the light, not blocked fully. Darkness can't over take it for long. To direct for the shadows of the milk-less way. Nevermore will be concealed, never to be placed away...

image: Ancient Annular: Dating Joshua's Eclipse - Universe Today

Special brakes: 1958 Porsche 356 A Speedster

We are often puzzled by how wide can be the price difference of these cars: of course conditions matter as well as the originality and the numbers of the car, but you can easily find the same kind of car for sale with a price difference of $50-100k with no apparent reason.

This particular car is not a matching numbers vehicle (chassis #84076) but, on the other side, has some benefits: first of…

Earth's Final Total Solar Eclipse Will Happen In Less Than A Billion Years

“On the timescale of a year, you can’t even notice the increased distance with sophisticated laser lunar ranging: the difference in the Moon’s orbit is mere centimeters-per-year. But over long periods of time, this adds up significantly. Approximately 570 million years from now, the very last total solar eclipse will occur, and after another ~80 million years, the last hybrid eclipse will occur. That will be the last time any portion of Earth finds itself bathed in the shadow of the Moon. Beyond that point, the Moon will no longer be close enough to Earth at any point in its orbit to have its shadow fall on our surface. From that moment onward, the only way to see a total solar eclipse will be to take to the skies, or to soar in space itself, where we can find ourselves in the Moon's shadow once again.”

This coming Monday, tens of millions of people will gather to watch the total solar eclipse that will go coast-to-coast across the continental United States. Total solar eclipses like this happen, on average, about once every 18 months, due to the frequency of alignment as well as the Moon’s apparent angular size. At present, about 40% of all solar eclipses are total eclipses, with annular eclipses making up 50% and hybrid eclipses the other 10%. However, this ratio has changed with time, and will continue to change. The Moon is migrating farther away from Earth, and annular eclipses are becoming more common, while total eclipses are becoming more rare. Although the migration rate is small -- mere centimeters per year -- that adds up over millions of years. At some point in the future, the Moon’s shadow will be completely unable to fall on Earth’s surface any longer.