Space & Earth
10 verified entries, each with its sources and the date we checked it.
Which planet in our solar system is the only one not named after a Greek or Roman god?On Venus, which is longer: a day or a year?About how far does the Moon drift away from Earth each year?What share of Earth's surface is covered by ocean?Why does Mars look red?Saturn is mostly gas. Would it float in a big enough bathtub?About how long does sunlight take to reach Earth?What actually causes Earth's seasons?What is Earth's inner core made of?Which planet was found by mathematical prediction before anyone saw it?