Rocky fireballs like the one that fell over Alberta, Canada last year shouldn't originate from the icy Oort Cloud... but this one apparently did.
A Yule log is a Christmas tradition in which a log of wood is progressively burned in a fireplace over several nights.
Stone tools found in a 4,000-year-old grave near Stonehenge have traces of gold on their surfaces that indicate they were used to fashion gold ornaments.
Three astronauts are scheduled to fly home on the capsule in March 2023. Now that may no longer be possible.