Earth observation & weather 39 objects

En la vida cotidiana

• The Moon's average distance, about 384,400 km, is more than 960 drives along the 400 km Seoul–Busan expressway — and the Moon sits under «Earth's Moon» in this catalog's Moons group.
• Constellation names taught at school, such as Orion or Ursa Major (home of the Big Dipper), are the same everywhere because the world shares the 88 constellations set by the International Astronomical Union.
• Your phone's map position comes from GPS satellites orbiting about 20,000 km up — which is why navigation satellites belong to the Spacecraft group.