The Big Dipper looks like a question mark in the northeast. After months of asking “when is Spring?”, follow this question mark’s curve to find a star that announces Spring to our skies. Rising near 8:15 this evening, the bright star Arcturus comes up in the east-northeast, arriving each March in the evenings.

The Scorpion is making his usual pre-dawn appearance as winter enters its final days. From 2:30 to 5:30 AM EDT, this “S”-shaped constellation climbs into the southeast, with its red star Antares due south at 5:40 AM, with its head and claws to the upper right, and body and tail curling like an “S” toward the horizon.

Today marks the anniversary of the discovery of Pluto. Clyde Tombaugh was examining pictures taken through the telescope at the Lowell Observatory in Arizona in January, 1930, over a period of days. One of the “stars” in the image moved while the stars remained in place, revealing the frozen world for the first time.