Get out of bed early enough this weekend, find a spot with a wide view of the sky, and you may get a rare glimpse of a U.S. space shuttle streaking across the sky.
Usually the shuttle flights circle Earth no farther north than Cape Canaveral, too far south to be spotted from Baltimore.
But this time, thanks to its Star Wars mission, the shuttle Discovery was launched into an orbit that takes it as far north as Moscow and as far south as the southern tip of South America.
That means it should be visible here, just before dawn on Sunday and Monday.
"It should be as bright as one of the brightest stars in the sky," says Jim O'Leary, a spokesman for the Maryland Science Center. "Given clear skies, this should be visible to the naked eye. It would be kind of neat to see it up there, almost 170 miles in altitude."