This weekend my uncle, aunty, and two little cousins came from Seattle to visit us. On Saturday we all went to go to the beach where we swam, built sandcastles, and ate lunch. In the water I realized that, when fully submerged, I felt practically weightless, much like astronauts do in space. Then I remember how many astronauts do underwater training in order to simulate the conditions of space. When under water, you don't feel any forces pulling or pushing you in any direction, except for waves that come crashing over you. Then I remembered all about how we're learning about gravity and orbits, and the effect of gravity from other planets. This also relates to how the moon's gravity affects the tides of the ocean. Interestingly, I didn't feel any force pulling me up towards the moon. Perhaps because it was so small compared to my mass, or simply because the Earth's pull was much much stronger on me. Either way, it was a very educational and very fun trip to the beach.
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