SATURDAY PREVIEW At the Green and Natural Living Expo, more than 30 companies will be on hand to showcase eco-friendly products and services including kitchen and bath countertops, furniture, cleaning products, cosmetics, alternative energy products and more. There will be seminars throughout the day. 11 a.m. to 6 p.m. Saturday; $5 to $7; children under 12 free. Crowne Plaza Hotel, 2004 Greenspring Drive, Timonium. 877-270-1393; www.greennaturalexpo.com
Original alternative-music rockers The Smithereens make a comeback with two sets of old (“A Girl Like You”) and new tunes. 6:30 and 10 p.m. $30. Rams Head OnStage, 33 West Street, Annapolis. www.ramsheadonstage.com
At Saturday night’s star-gazing program, join the Westminster Astronomical Society as they watch the battle of the Gods. See Orion take on all challengers, the Bull, The Whale and the Twins. January’s highlight: Orion’s Heavyweight Champion Belt. All programs are rain or shine. 8 to 10 p.m. Saturday; free. 5100 Deer Park Road, Owings Mills. 410-549-3026
