Simplify the following text for a Grade 8 native English-speaking person.
Original: A-type asteroids are relatively uncommon inner-belt asteroids that have a strong , broad 1 Â m olivine feature and a very reddish spectrum shortwards of 0.7 Â m .
Simplified: A-type asteroids are fairly uncommon closer asteroids that have a strong , broad 1 Â m olivine feature and a very reddish spectrum shortwards of 0.7 Â m .