Stability of the Solar System one point, the two may fall into sync, at which time Jupiter's constant gravitational tugs could accumulate and pull Mercury off course with 1–2% probability, 3–4 billion years into the future. This could eject it from the Solar System altogether or send it on a collision course with Venus, the Sun, or Earth. Another example is Earth's axial tilt which, due to friction raised within Earth's mantle by tidal interactions with the Moon (see below), will be rendered chaotic at some point between 1.5 and 4.5 billion years from now. Objects coming from outside the solar system can also affect
Union of the Sun and Moon Union of the Sun and Moon The Union of the Sun and Moon () is one of the Seventeen tantras of the esoteric instruction cycle () which are a suite of tantras known variously as: Nyingtik, Upadesha or Menngagde within Dzogchen discourse. "This tantra shows which experience a person undergoes in the intermediate state, the bardo, after passing away. It teaches how to resolve one's master's oral instructions during the bardo of this life, how to stabilize awareness during the bardo of dying, how to attain enlightenment through recognizing awareness during the bardo of dharmata, and, if necessary, how to