«The different colors of the inner and
outer ring suggest that this galaxy has experienced two different formation periods,» [lead author Burcin] Mutlu - Pakdil says.
Not exact matches
These distinct, sharp - edged features — somewhat akin to bathtub
rings —
suggest that each of the comet's lumps has an
outer shell of onionlike layers that is at least several hundred meters deep, the researchers report online today in Nature.
Their results
suggest that material leaving the
rings»
outer edge can pool into a small moon that migrates away from the planet.