Parallax and proper motion on the sky - 360° view
Why the open web links it
Demonstrates parallax and proper motion of stars with a 360° animated view of the sky.
Linked by 2 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including wikipedia.org, esa.int.
Cited in 1 Wikipedia article, including Gaia (spacecraft).