Its gravity would tug on the planet causing absolutely massive tsunamis, earthquakes, and increased volcanic activity. The ash and chemicals raining down would cause a mass extinction on Earth.
If the gravitational influence of a second moon were extreme, it could lead to phenomenally huge ocean tides (up to a kilometre high) which would also result in frequent tsunamis. It could also lead to enhanced volcanic activity and earthquakes.
Earth's second moon is a quasi-satellite known as Kamoʻoalewa.
Based on the simulations, Earth can support up to three moons the size of our current Moon, up to four Pluto-sized moons, and up to seven Ceres-sized moons – assuming that they're all the same size, which they probably wouldn't be.
Of the natural satellites in the Solar System's habitable zone —the Moon, two Martian satellites (though some estimates put those outside it) and numerous Minor-planet moons — all lack the conditions for surface water.
A group of Hungarian scientists has confirmed a long-standing astronomical speculation: the Earth has three natural satellites or moons, not one.
In 2011, planetary scientists Erik Asphaug and Martin Jutzi proposed a model in which a second moon would have existed 4.5 billion years ago, and later impacted the Moon, as a part of the accretion process in the formation of the Moon.
The rings and space
However, the rings would likely scatter any radio signals from satellites and spacecraft in equatorial orbits, limiting their usefulness. Still, the rings would likely interfere with astronomy, hindering ground views of the nighttime sky, Scharf said.
Ancient microbes might have used a molecule other than chlorophyll to harness the sun's rays, one that gave the organisms a violet hue. The earliest life on Earth might have been just as purple as it is green today, a scientist claims.
The tilt of Earth's axis is the main cause of the seasons. If Earth had no tilt, then the length of daylight and the intensity of solar heating seen by a person standing at a single place on the surface would be the same all year round.
Saturn's rings are disappearing, and we don't know how much longer they will be around. Astronomers have known since the 1980s that Saturn's icy innermost rings are steadily eroding onto its upper atmosphere.
While these gas giants formed in the outer Solar System, the rocky planets formed only in the inner Solar System. The inner planets are shielded from the collisions that could have formed rings and this could be a reason why earth doesn't have rings.
Even if the Earth were to survive being consumed, its new proximity to the the intense heat of this red sun would scorch our planet and make it completely impossible for life to survive. However, astronomers have noted that as the Sun expands, the orbit of the planet's is likely to change as well.
With no sunlight, photosynthesis would stop, but that would only kill some of the plants—there are some larger trees that can survive for decades without it. Within a few days, however, the temperatures would begin to drop, and any humans left on the planet's surface would die soon after.
The sun has a surface temperature of 5,500 K, typical for a yellow star. Red stars are cooler than the sun, with surface temperatures of 3,500 K for a bright red star and 2,500 K for a dark red star.
Earth's only natural satellite is simply called "the Moon" because people didn't know other moons existed until Galileo Galilei discovered four moons orbiting Jupiter in 1610.
Before Earth and the Moon, there were proto-Earth and Theia (a roughly Mars-sized planet). The giant-impact model suggests that at some point in Earth's very early history, these two bodies collided.
Namesake. The name Earth is at least 1,000 years old. All of the planets, except for Earth, were named after Greek and Roman gods and goddesses. However, the name Earth is a Germanic word, which simply means “the ground.”
Sadly, the Earth doesn't have rings like Saturn, and it probably never did. It might have had rings of rock and dust for periods, but they weren't that majestic to look at. In fact, seeing rings around the planet would mean we'd lost a moon, and our planet was about go through a period of bombardment.
Earth has no rings.
Moon dust fountains and electrostatic levitation. There is some evidence that the Moon has a tenuous layer of moving dust particles constantly leaping up from and falling back to the Moon's surface, giving rise to a "dust atmosphere" that looks static but is composed of dust particles in constant motion.
Gas giants are also called failed stars because they contain the same basic elements as a star. Jupiter and Saturn are the gas giants of the Solar System.