Wouldn't it be much more fun if the earth orbited a triple star system? No years, unpredictable seasons😯, random daylight hours, utter chaos, and some very very hot weeks!! 😳 Simulation made with @geogebra (NSolveODE at its limits !!!🧐). pic.twitter.com/geylUpfpeJ
TOMORROW Jupiter and Saturn will be at their closest separation in the sky since 1623 at 0.1° apart. This animation shows how close they are in the sky. Because 0.1° is hard to picture, I've added the Moon to give us a sense of scale (Moon is ~0.5° diameter) #GreatConjunction2020pic.twitter.com/QiI2W44D09
The #GreatConjunction of #Jupiter and #Saturn thru my telescope just after 6pm. 4 of Jupiter's moons; Europa, Ganymede, Io & Callisto, and Saturn's Titan moon visible. Stacked many images for more clarity and color. Nexstar Celestron 6SE with Nikon D750 attached. #scwx#ncwxpic.twitter.com/vzP2IAuFnS
🚨 Keep an eye on the sky in the next 5 days – #Jupiter and #Saturn are getting ever closer together until the 21st Dec when they'll look like one bright point in the sky.
In 1678, Newton published in Principia a demonstration that the planets' orbits are ellipses (r₁+r₂=c) with the Sun at one of the foci. 7 years earlier, Cassini proposed that the orbits follow the curve with r₁r₂=c². pic.twitter.com/swl8fbdMbz
