#1 Mercury & Venus are the only 2 planets in our solar system that have no moons.<br /><br />#2 If a star passes too close to a black hole, it can be torn apart.<br /><br />#3 The hottest planet in our solar system is Venus.<br /><br />#4 Our solar system is 4.57 billion years old.<br /><br />#5 Enceladus, one of Saturn’s smaller moons, reflects 90% of the Sun’s light.<br /><br />#6 The highest mountain discovered is the Olympus Mons, which is located on Mars.<br /><br />#8 A light-year is the distance covered by light in a single year.<br /><br />#9 The Milky Way galaxy is 105,700 light-years wide.<br /><br />#10 The Sun weighs about 330,000 times more than Earth.