Nothing is out of whack with the sun, a NASA researcher said this week, despite some scientists' suggestions that a lull in the weather there lately is unusually long, a phenomenon linked to at least one small ice age. < > "There have been some reports lately that solar minimum is lasting longer than it should. That's not true," said NASA solar physicist David Hathaway. The ongoing lull in sunspot numbers "is well within historic norms for the solar cycle." < >