Thanks to a Totally Kate contributor for the info!

FYI

http://www.lohud.com/article/20090111/CALENDAR/90102027/1018/NEWS02

A new planetarium show opens this weekend at The Hudson River Museum
called "The Planets," showing beautiful digital sequences. The show is
narrated by actress Kate Mulgrew, who starred as Captian Janeway in
"Star Trek: Voyager." Tickets are $2, $1 for seniors and children in
addition to the regular museum admission of $5. 511 Warburton Ave.,
Yonkers. 914-963-4550.

Notes: The show is not yet listed on the museum's website.
(http://www.hrm.org/index.html)

But here are the directions to the museum:

By Train:
Grand Central Terminal, Take Metro-North Hudson Line local train to
Yonkers Station. From the north, this train originates at
Croton-Harmon Station. Museum is approximately $5 cab ride from the
station.
-or-
Metro-North Hudson Line from Grand Central Terminal to Glenwood
Station. Walk 1 block east on Glenwood Avenue; turn left onto Ravine
Avenue . At the end of Ravine Avenue , turn left into Trevor Park.
Follow path to museum entrance.
By Bus:
BXM3 (Madison Avenue to 242nd St and Broadway, Riverdale or to Getty
Square Yonkers . Then, take Westchester County Bee-Line Bus Route #1
Broadway-Warburton line to museum.