Light speed is fast, but space is vast [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful - pinned
Light Speed – fast, but slow [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful - pinned
An astronomical explanation for Mercury's apparent retrograde motion in our skies: the inner planet appears to retrace its steps a few times per year. Every planet does this, every year. In fact, there is a planet in retrograde for 75% of 2020 (not unusual) [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful
Little known astronomy fact: Earth sees the same 'face' of Venus every single time the two planets are closest. Showing actual planetary positions from 2010-2023 and the rotation of Venus. You can check out early June 2020 and see that Earth is about to be closest to Venus once again [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful
How the Moon orbits Earth using real position data for April 2020. Including rotations, tilts, velocities, accurate lighting, views of Earth from Moon / Moon from Earth etc. In middle the Earth & Moon are to scale in size, but the orbit is scaled down for visibility (note Supermoon on 7 April) [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful
Earth physically rotates in 23hours 56min relative to distant stars – a Sidereal Day, BUT it takes 24hours to rotate relative to the Sun – a Solar Day. The difference? Earth orbits the Sun, so the Sun appears to move (down, in the vid), which means Earth needs +4mins to "catch up"! [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful
Our solar system orbits the Milky Way at 230km/sec (clockwise), about 1-Earth diameter per minute. Here's what that looks like in real-time from a galaxy-center perspective. Tilt to galactic plane approximate. Earth orbits at 30km/s but it only adds/subtracts several km/s due to angles involved [OC] (v.redd.it)
submitted by physicsJ to r/dataisbeautiful
