Meteor shower
From Tardis Wiki, the free Doctor Who reference
Madame Vastra, in an attempt to pique the Eleventh Doctor out of his retirement in London 1892, reported a meteor shower in the southwest with unexpected timing and density suggesting possible alien intervention. (TV: The Great Detective)
Following the Doctor's supposed death in 2011, Amy Pond heard of a freak meteor shower two miles away from her residence and so got a bottle to share with River Song. (TV: The Wedding of River Song)
