Observing the Sun Safely [GRADE 3 AND UP] Project an image of the Sun for viewing Remember the Egg [GRADE 4 AND UP] Train your eye to spot subtle differences on planetary surfaces by looking at the ...

The solar system's dwarf-planet population is about to increase by one. The far-flung object 2014 UZ224 — informally known as DeeDee, for "Distant Dwarf" — is about 395 miles wide (635 ...