New meteorite data suggest the orbits of the giant planets abruptly changed about 60 million to 100 million years after the solar system started forming.
A race against the clock: Constraining the timing of cometary bombardment relative to Earth's growth - ScienceDirect
Flashes in Venus' atmosphere might be meteors, not lightning
Planetary Science
Rare glimpse of giant planet still 'in the womb' yet nine times the mass of Jupiter, Astronomy
Mercury, As Never Seen Before: MESSENGER visits innermost planet
NASA's Dawn spacecraft has gone silent
Snowball Earth - Wikipedia
How alien can a planet be and still support life?
How did Earth get its water?
Earth, neighbors weren't the first rocky planets in the solar system
History of Earth - Wikipedia
The ghosts of nearly two dozen icy volcanoes haunt dwarf planet Ceres
Super-Earths may come in two flavors