ブライアン・メイさんのインスタグラム写真 - (ブライアン・メイInstagram)「The New Horizons Parallax experiment ! This great GIF movie by John Spencer of the NH team sums it all up. What are we looking at? We are flicking between two views of the same part of the starry sky. One view was taken from Earth, and the other was captured by the New Horizons spacecraft, over 4,000,000,000 miles away. That’s 4 BILLION miles ! (💥 actually 4.36 billion miles) The star that moves back and forth is Proxima Centauri – the closest star to our own Sun. Viewed from the Earth, this star appears in the left-hand position, and viewed from the spacecraft, it appears displaced to the right. This is actually NOT rocket science (although it was made possible by Rocket Science, of course !!!) It’s just the same as if you took two pictures of your best friend standing in front of a distant forest background. If you moved your camera sideways between exposures, you would see him in two different positions Relative to the background in the two photographs you took. And if you made a movie flashing between the two pictures, you would see your best friend moving sideways back and forth, just like Proxima Centauri is doing here.If you swipe, you can see another close start doing the same thing, the second part of this experiment. This change of relative positions due to change of viewpoint is called PARALLAX. Personally, I find this movie mesmerising. But of course we all know that this is a great opportunity to make a stereoscopic 3-D image, and it’s exciting, because this stereoscopic image will have the largest baseline ever achieved in a 3-D photograph. I’ll show you the 3-D pictures in the next post. But you can check out the official NASA story by clicking the link in my bio. Bri」6月13日 12時24分