Neptune sets around 8:25 p.m. and Venus sets around 9:20 p.m. Uranus sets around ... The solar system has eight planets. Moving out from the sun in order are: Mercury, Venus, Earth, Mars, Jupiter ...
Planets change orbit shape around Neptune’s size. Metal-rich stars help giant planets form. Eccentric orbits suggest chaotic planet formation.
Astronomers call these heavy elements metals. "Small planets are common; large planets are rare. Large planets need metal-rich stars in order to form; small planets do not. Small planets have low ...