July 2: It’s World UFO Day: Believers organize sky-searching parties and encourage governments to declassify their records of UFO sightings.
July 4: Cutting the cake in honor of the late cartoonist and inventor Rube Goldberg should require at least 12 steps, including a mousetrap, a cuckoo clock, a robotic leg in a boot and a hamster running on a wheel.
July 9: Halle Berry plays Molly Watts, an astronaut who struggles with life on Earth in the premiere of the new CBS series Extant. She’s been alone in space for a year, and the course of human history is rapidly changing. Also, her kid is an android.
July 12: Commercial use of Morse code ended in the U.S. in 1999; the Maritime Radio Historical Society welcomes the public to help commemorate the event at a historic, Marconi-era station along California’s Point Reyes National Seashore.
July 12-13: Join rangers and volunteers at Saratoga National Historical Park as they forge, stitch, hammer and snip their way through re-creating the trades that supplied the Continental Army.
July 18-20: Blending arts and renewable energy education, the 20th annual Solar Fest in Tinmouth, Vt., offers hands-on workshops, a sustainable marketplace and musical acts. solarfest.org
July 19-27: National Moth Week’s citizen science projects, identification parties and educational workshops should draw budding entomologists like moths to a … well, you know.
July 20: Apollo 11 astronaut Neil Armstrong took that one giant leap for mankind 45 years ago today.
July 29: The Delta Aquariids meteor shower peaks in the hours before dawn in a nearly dark southern sky, unhampered by a moon only a few days into its waxing phase.
July 31: The New York Academy of Sciences hosts a symposium on “Fifty Years of the Genetic Code,” highlighting advances since 1964.