The moon is visible during the day because of its orbit around Earth. Its position relative to the sun and our planet allows it to be visible in daylight.

The blue color of the sky is due to Rayleigh scattering of sunlight by the Earth's atmosphere. Shorter wavelengths of light, like blue, scatter more, creating the blue sky we see.

Discovering aliens is a tantalizing possibility. While no concrete evidence exists, ongoing scientific exploration and advancements increase the chances of finding extraterrestrial life.

Earth's weight is about 5.97 x 10^24 kilograms. This mass generates gravity, holding everything on the planet, including us, firmly to its surface.

Airplanes stay aloft through a combination of lift, created by the shape of their wings, and the forward motion generated by engines. This balance allows them to overcome gravity and stay in flight.