SpaceSome of Uranus's small moons are doomed to collide The first measurement of the mass of a small Uranian moon suggests it will be obliterated after smashing into one of its neighbours in the next million years ¿ìè¶ÌÊÓÆµ
SpaceMoon’s magnetic field lasted twice as long as we thought it did Lunar rock shows the moon’s magnetic field lasted a billion years longer than we thought, which may help us understand how planets keep their protective fields ¿ìè¶ÌÊÓÆµ