If Earth had two moons, it would be catastrophic. An extra moon would lead to larger tides and wipe out major cities like New York and Singapore. The extra pull of the moons would also slow down the Earth’s rotation, causing the day to get longer.

Now, moving the Moon closer to the Earth will increase the gravitational exertion of the satellite onto our planet. If the satellite were slightly closer, the tidal bulge would grow. Low tides would be lower and high tides would be higher and any low lying coastline would be flooded.

The moon’s gravity, combined with the waltz of Earth and the moon around their center of mass, forces the oceans into an oval shape, with two simultaneous high tides. If the moon were half its mass, then the ocean tides would have been correspondingly smaller and imparted less energy to it.

How would the gravitational force between the earth and the moon differ if the moon were twice as far as it is now? It would decrease by less than two times. You just studied 7 terms!

The migration of the Moon away from the Earth is mainly due to the action of the Earth’s tides. The Moon is kept in orbit by the gravitational force that the Earth exerts on it, but the Moon also exerts a gravitational force on our planet and this causes the movement of the Earth’s oceans to form a tidal bulge.

But a bigger moon probably wouldn’t affect Earth’s stability much, Siegler said. It would make the planet’s tilt harder to change, which would mean a more stable climate, which “just means maybe ice ages wouldn’t happen as often,” he told me.

In option (A), A 1000 kg elephant feel the biggest gravitational force on Earth due to its heavy mass. In other option, the mass is lesser than elephant. So, a 1000 kg elephant will feel the biggest gravitational on Earth. Hence, the correct option is (A).

Not enough, and it might, not likely, but it might fall back together into something moon-ish. On the other hand, if it’s a huge lot of energy, a large part of it may be ejected from the Earth-moon system. If the pieces fall to Earth, as some will in probably almost any case, we’re all dead.

NASA cameras have captured video of the largest explosion it has ever seen on the moon… ‘For about one second, the impact site was glowing like a fourth magnitude star,’ NASA said. The meteoroid was traveling around 56,000 miles per hour when it slammed into the moon’s surface.

The Moon will swing ever closer to Earth until it reaches a point 11,470 miles (18,470 kilometers) above our planet, a point termed the Roche limit. “Reaching the Roche limit means that the gravity holding it [the Moon] together is weaker than the tidal forces acting to pull it apart,” Willson said.

Scientists have long agreed on the existence of the planet, called Theia, and its role in creating the moon. The theory goes that Theia crashed into Earth early in its life and knocked loose a chunk of rock that would later become the moon.