Astronomy Picture of the Day ·
Star Trails and the Bracewell Radio Sundial
The Astronomy Picture of the Day for July 13, 2018 is “Star Trails and the Bracewell Radio Sundial,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Miles Lucas at NRAO). The original explanation runs about 214 words.
From the explanation
“Sundials use the location of a shadow to measure the Earth’s rotation and indicate the time of day. So it’s fitting that this sundial, at the Very Large Array Radio Telescope Observatory in New Mexico, commemorates the history of radio astronomy and radio astronomy pioneer Ronald Bracewell .”
— APOD editors, July 13, 2018
Read the full explanation on science.nasa.gov
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At a glance
- Date
- July 13, 2018
- Type
- Image
- Credit
- Credit: Image Credit & Copyright: Miles Lucas at NRAO
- Copyright
- Copyrighted by the credited creator. Ask the copyright holder before reusing it.
- Explanation length
- About 214 words