Planetary systems with both super-Earths and Jupiter-type planets may be common, according to a new study. As in our own solar system, the giant planets would act as "bodyguards" protecting the smaller planets from asteroid impacts.
Read MoreThey're called trans-Neptunian objects, or TNOs. Astronomers analyzed data from the Dark Energy Survey - which just completed 6 years of observations - to find over 100 new little worlds in the cold outer reaches of our solar system.
Read More