Formation and evolution of the Solar System impact event, the Tunguska event, the Chelyabinsk meteor and the impact feature Meteor Crater in Arizona. The process of accretion, therefore, is not complete, and may still pose a threat to life on Earth. Over the course of the Solar System's evolution, comets were ejected out of the inner Solar System by the gravity of the giant planets, and sent thousands of AU outward to form the Oort cloud, a spherical outer swarm of cometary nuclei at the farthest extent of the Sun's gravitational pull. Eventually, after about 800 million years, the gravitational disruption caused by galactic tides, passing stars
Pokémon Sun and Moon the franchise in general and that they were working to develop interactivity between the app and the main series. Ohmori added that during the development of "Sun and Moon" they "completely redesigned the system, and actually ended up pushing the 3DS even further to what [they] thought was the most [they] could draw out of it." With a team of around 120, the games took about three years to develop, comparable with other new-generation games. Later on, Kazumasa Iwao, who was responsible for the battle systems in "Sun and Moon", was recruited as director for "Ultra Sun and Ultra Moon".