Twinkle, twinkle.

SEE
Sidereal Motion
What: The star-quality live performance combines footage of the night sky from observatories around the world with electronic music, photos, and animation.
Why: It’s part of Adler After Dark, an event complete with drinks, a DJ, and access to unlimited space shows.
When: Tonight, 7 & 8:30 p.m.
Where: Adler Planetarium, 1300 S. Lake Shore Dr., at McFetridge Dr. (312-922-7827). Tickets ($7-$10) online at adlerplanetarium.tix.com.

SHOP
Anjénu
What: The Wicker Park gem closes its storefront but bubbles up again as an appointment-only wedding stationery biz.
Why: Before the leap, everything in the store goes for 35-75 percent off.
When: Thru May 29.
Where: 1747 W. Division St., b/t Hermitage Ave. & Wood St. (773-469-2212).

EAT
The Purple Pig’s Spring Menu
What: For your porking-out pleasure, chef Jimmy Bannos Jr. switches things up, favoring ingredients from The Chef’s Garden.
Why: Tasty new additions like jamon serrano with oyster mushrooms and fried duck egg over grilled bread.
When: Sun.-Thurs., 11:30 a.m.-midnight; Fri. & Sat., 11:30 a.m.-2 a.m.
Where: 500 N. Michigan Ave., at Illinois St. (312-464-1744).

REGISTER
Dash for Detection
What: Help give pancreatic cancer the boot at the 5K walk/run that raises money for the Michael Rolfe Pancreatic Cancer Foundation and The Lustgarten Foundation.
Why: You take a good cause in stride.
When: June 4, 10 a.m.
Where: Grant Park, Randolph St., at Lake Shore Dr. Admission is $35 when you register online at dashfordetection2011.kintera.org or $40 on-site.

BUY
Unison Home Warehouse Sale
What: The Chicago design house takes up to 90 percent off everything (bedding, table linens, garden accessories, ceramics, and more).
Why: Two-for-one organic flannel blankets and pillows.
When: Fri. & Sat., noon-6 p.m.; Sun., noon-4 p.m.
Where: 2000 W. Fulton St., at Carroll Ave. Info at 312-492-7960.

Photo: Courtesy of NASA, ESA, and the Hubble Heritage Project (STScl/AURA)