Simplify the following text for a Grade 11 native English-speaking person.
Original: Duncan Steel , Gerhard Hahn , Mark Bailey , and David Asher carried out projections of its long term dynamical evolution , and found a good probability that it will become an Earth-crosser asteroid , and may spend a quarter of its life in such an orbit .
Simplified: Duncan Steel , Gerhard Hahn , Mark Bailey , and David Asher found out what 's it 's future could be , and found a good chance that it will become an Earth-crosser asteroid , and may spend a quarter of its life in such an orbit .