🔭⭐️↔️📏

#stellar parallax #distance measurement #apparent shift #celestial mechanics #triangulation

☀️🌍📐⭐

#parallax #distance unit #stellar parallax #baseline #trigonometry

📐1️⃣″⭐

#parallax #arcsecond #distance unit #stellar parallax #trigonometry

🌟↔️📐

#astrometry #proper motion #stellar parallax #stellar kinematics #star movement measurement #angular displacement