What if Mercury was our moon?

Mercury would look exactly like our Moon with its dark gray surface and asteroid craters. And it's only 1.5 times the size, so its impact on our tidal systems and climate wouldn't be disastrous. Out of all the planets in our Solar System, Mercury would be the safest one to replace our Moon.

Is it possible for Mercury to have a moon?

Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons.

What if Mars replaced the moon?

As we know, planets and moon's generate no light on their own. Instead, they merely reflect sunlight that hits them directly. Therefore, if Luna was replaced with Mars, then it's likely that there would be more light visible at night. It would make it all the more eerie if it put a red tint on the night time landscape.

What if Earth had rings?

At the equator, the rings would appear to divide the sun, casting a dramatic shadow over half the world. Likewise, the rings themselves would cast shadows on Earth.

What if Jupiter hit the sun?

If Jupiter were mixed throughout the sun, the temperature of the sun would decrease slightly, and perhaps it would take a few hundred years for the sun's temperature to return to its previous level, and maybe we would get a few basis points less solar radiation, but it wouldn't go out. Highly active question.

WHAT IF MERCURY WAS OUR MOON

What if Pluto was our moon?

Pluto wouldn't look much different than our current Moon. It would be smaller though, and this wouldn't be good for Earth. That's because Pluto's gravitational pull would be weaker than that of the Moon. Earth would begin wobbling all over the place.

What if Neptune hit the Sun?

So if Neptune were thrust so much closer to the Sun, it would warm up very quickly indeed. Over time, the Sun would affect Neptune's atmosphere, as it does Mercury's. Neptune's atmosphere is composed of hydrogen, helium, and trace amounts of methane.

What would happen if Mercury hit Earth?

Such an impact would kill all life on our planet. Nothing would survive. By contrast, the asteroid that doomed the dinosaurs 65 million years ago was likely just 6 miles in diameter; Mercury is 3,032 miles across. The last time an object about that size hit the Earth, the resulting debris formed our Moon.

What if the Sun exploded?

For Earth to be completely safe from a supernova, we'd need to be at least 50 to 100 light-years away! But the good news is that, if the Sun were to explode tomorrow, the resulting shockwave wouldn't be strong enough to destroy the whole Earth. Only the side facing the Sun would boil away instantly.

Does Earth have 3 moons?

The simple answer is that Earth has only one moon, which we call “the moon”. It is the largest and brightest object in the night sky, and the only solar system body besides Earth that humans have visited in our space exploration efforts. The more complex answer is that the number of moons has varied over time.

What if Mercury hit Venus?

If Mercury were to impact Venus, even if it began by creeping up on it very, very slowly so as to have as little kinetic energy as possible, it would fall into Venus's gravitational well and release gravitational energy enough to melt both bodies.

What would happen if Neptune and Uranus collide?

If the object just grazed Uranus instead of a head-on collision, the planet's interior would not be affected but the impact would still be enough to tilt the planet. Conversely, if Neptune did experience a head-on impact, the collision would have affected the planet's interior but would not form a disk of debris.

What happens if 2 planets collide?

If the cores collide at an angle then the planets may or may not merge, but in all cases a large amount of the gaseous envelope will be lost. Very oblique collisions do not disrupt the planets at all and both would continue on almost the same orbits without losing any mass.

Will the Sun ever burn out?

Astronomers estimate that the sun has about 7 billion to 8 billion years left before it sputters out and dies. One way or another, humanity may well be long gone by then.

What would happen if a nuke hit Jupiter?

In short: Nuking Jupiter won't do much. As you correctly noted, there is definitely not enough oxygen in Jupiter's atmosphere to support combustion, so the bomb would not ignite the hydrogen.

Can a black hole pull in a planet?

Despite their abundance, there is no reason to panic: black holes will not devour Earth nor the Universe. It is incredibly unlikely that Earth would ever fall into a black hole. This is because, at a distance, their gravitational pull is no more compelling than a star of the same mass.

Is Saturn a failed star?

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.

What if Earth rotated backwards?

If the earth abruptly changed its rotational direction, probably many things we see every day would be destroyed. Skipping over the transition, however, an earth rotating in the opposite direction would, among other things, cause the sun, moon and stars to appear to rise in the west and set in the east.