By: ArtAlienTV-Gigapans
Image: NASA/JPL/UArizona ⧉
Subject: ArtAlienTV
License: Copyright, All Rights Reserved

Uploaded: 22 Jan 2022
Last Updated: 22 Jan 2022

265 megapixels
13,934 x 19,026 pixels
46.4 in X 63.4 in at 300dpi
0 pixels per inch

The crater in the center of this HiRISE image defines where zero longitude is on Mars, like the Greenwich Observatory does for the Earth. Originally, the larger crater that this crater sits within, called Airy Crater, defined zero longitude for the Red Planet. But as higher resolution images became available, a smaller feature was needed. This crater, called Airy-0 (zero), was selected because it would require no adjustment of existing maps. These days, longitude on Mars is measured even more precisely using radio tracking of landers such as InSight, but everything is still defined to keep zero longitude centered on this crater. Written by: Laszlo Kestay (narration: Tre Gibbs) (20 January 2022) This is a stereo pair with ESP_070869_1750. My enhanced image clips are subject to copyright but the gigapan image is Creative Commons: Attribution. All these finds must be credited to ArtAlienTV unless stated otherwise. TRY the FREE ArtAlienTV APP HERE 👉 http://h.fanapp.mobi/artalientv Access to over 20 million space images. Powerful space research utility app. Please Donate with PAYPAL and help this important research. Send payments to: [email protected] Very much appreciated however small 😊👍