January 21, 2013
PORTENTS IN THE SKY: Look Up in 2013 And You Might Just See a Comet. “‘Great Comets’—those bright enough for us to see with the naked eye—are exceedingly rare. Yet two of them could come our way this year.”
PORTENTS IN THE SKY: Look Up in 2013 And You Might Just See a Comet. “‘Great Comets’—those bright enough for us to see with the naked eye—are exceedingly rare. Yet two of them could come our way this year.”
