BOS Planet on Instagram: "☄️ 3I Atlas just flew past Mars—And it’s getting closer! 3I/ATLAS, only the third interstellar visitor ever spotted in our Solar System. It swung closest to Mars on October 3, 2025 (~29 million km from Mars) and is racing toward the Sun for perihelion around October 29–30 (≈ 1.36–1.4 AU). At that point it’ll be ripping along at ~68 km/s. Afterward, it passes 0.65 AU from Venus (Nov 3) and makes its closest approach to Earth on December 19 at ~1.8 AU—far, but perfect for

The Space Doctor on Instagram: "Watch till the end. Stay behind me queen. Evidence from astronomical models and simulations suggests that Uranus's orbit was unstable in the early solar system. Jupiter and Saturn indeed played a major role in making Uranus’s orbit unstable during the early history of the Solar System. This instability is explained through a process known as the Nice Model. When Jupiter and Saturn got locked in a 2:1 resonance they destabilized the outer solar system and at one po