What's the cost for the tickets

It's literally whatever u want to give or you can buy it for like 25 or so each

$23 adults and $13 kids...but for the extra exhibits $30 adult and $20 kids

Pay-what-you-wish General Admission is available at ticket counters inside the Museum, and gives access to 40+ permanent galleries, including the Rose Center for Earth and Space. For admission to special exhibitions, films, and the Space Show, a +One or +All ticket is required. These can be purchased online in advance, or at the Museum. https://ticketing.amnh.org/