I hope you are spontaneous!
Today, from 4pm - 10 pm you can get into the Bloomfield Science Museum in Jerusalem FOR FREE!
They will have a digital planetarium show, a show about life on other planets, telescopes (dress warmly) will be set up for viewing the night skies, a family mobile-building project, and more!
English speakers, take note: There will be a lecture in English, given by Korean female astronaut Dr. Yi So-yeon, for an audience of age 12+
There are lots of other lectures and workshops, you can see the full list here.