May 26, 1998
Light takes eight minutes to travel from the Sun to the Earth. It took the universe 13.8 billion years to make you.
A Seemingly Square Sun
Birthday · May 26, 1998
A little universe, just for you
Your date.
Ready to give.
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APOD published May 26, 1998. Credit: T. Polakis. A publication-date match, not a photo taken on your date. Independent of NASA.
Isn't the Sun round? Yes, but in the above picture, the Earth's atmosphere makes it appear almost square. Here a layer of air near the Earth was so warm it acted like a giant lens, creating increasingly distorted paths for sunlight to reach the camera. Similarly, on a long flat highway, it may appear that the road in the distance is covered with water. In this case, light from the blue sky is being unusually refracted by warm air just above the dry road. No matter how the Earth's atmosphere makes the Sun appear, the Sun will always be spherical. This setting Sun was photographed over Lake Michigan in Muskegon, MI.
Image credit: T. Polakis