/home/sheriexplores/apps/router.php line 53 SQLSTATE[HY000]: General error: 144 Table './sheriexplores_exploredb/access_log' is marked as crashed and last (automatic?) repair failed
To view these resources with no ads, please Login or Subscribe to help support our content development.
School subscriptions can access more than 175 downloadable unit bundles in our store for free (a value of $1,500).
District subscriptions provide huge group discounts for their schools. Email for a quote: sheri@exploringnature.org.
A pulsar is a rotating neutron star that gives off radio waves out from its axis in a repeating pattern. When the axis rotates away from earth, it looks to us like the light is gone, so we see the pulsar as flashing on and off.
To view these resources with no ads, please Login or Subscribe to help support our content development.
School subscriptions can access more than 175 downloadable unit bundles in our store for free (a value of $1,500).
District subscriptions provide huge group discounts for their schools. Email for a quote: sheri@exploringnature.org.
