Question

creating a timeline
put the events in order so they form a timeline that shows plutos journey from planet to dwarf planet.
1979: pluto crossed neptunes orbit
1930: pluto discovered by clyde tombaugh
2006: pluto reclassified as a dwarf planet
1978: plutos largest moon discovered

Explanation:

Arrange events by chronological order. 1930 is the earliest year when Pluto was discovered, then in 1978 its largest moon was found, in 1979 it crossed Neptune's orbit, and finally in 2006 it was re - classified as a dwarf planet.

Answer:

1. 1930: Pluto discovered by Clyde Tombaugh
2. 1978: Pluto's largest moon discovered
3. 1979: Pluto crossed Neptune's orbit
4. 2006: Pluto reclassified as a dwarf planet