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entertainment geek science

What f the Moon where at the distance the ISS is?


The Moon is at about 384000 km distance from Earth. That’s a pretty big distance and it tidaly locked with our planet so that it will alwyas show the same face to our planet and, because of this, the time it takes to revolve around itself is equal to the time it takez to amke one turn around Eart.

If the Moon would be at the distance the IS is, which is about 340 km high, then the video from above would display how the Moon looks like just before it would be shredded to pieces. At that distance or even more, an object the size of the Moon would be shredded to pieces by Earth gravity. We would have quite a lot of rings because of this.

Via Presurfer.

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geek learn science

Space edition: Earth without the Moon and the Mars Space Exploration Vehicle


Without the Moon we would have a short day, since the planet would spin faster. A day would be only 6 hours long. Also, without the Moon the tilt of Earth would vary so much that seasons would be wildly inconsistent from year to year. So, the Moon is very important.

Also, in this space edition we ask: how would you walk around on Mars in 30-40 years? Well, using the Space Exploration Vechile:

Read more about the Space Exploration Vehicle from PopSci.

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infographics

Aliens invaded the Moon on July 20th 1969

What a day. That day changed the face of the Moon and of the Universe. It was the day when aliens first invaded the Moon: July 20th 1969. Via IFL Science.
moon-invaders-july-20-1969

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science

The Moon: is has a tail and we would have a catastrophic planet without it


The Moon has a tail made up of sodium atoms very thinly dispersed throughout the small Moon exosphere. Moons atmosphere, called exosphere, is so rare that when it is full Moon and it is between us and the Sun, its atmosphere gets pushed around towards the Earth. This way we will be able to reside inside Moon’s tail.

You can read more here.

Also, without the Moon we would have a day that would be only 6-8 hours and the axial tilt would be much greater:

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geek learn science

Why doesn’t the sun steal the Moon?


Because it is in Earth’s gravitational well or in Earths Hill sphere which goes up to 1.5 million kilometers out in space. From this sphere you can only get away if you break the escape velocity. For earth the escape velocity is about 5 km/s, but where the Mon is it is about 1.2 km/s. The Moon orbits at about 1km/s so it won’t get away from Earth.

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learn

What would happen if we would live on the Moon?


Well, not many good things actually, as there is no air in there, sun’s radiation would boil everything and the nights cold would freeze everything. Also, the gravity is three times smaller than on Earth and this would mean bone mass loss and inherent health issues.

We could live underground, in craters, but it would not be a very fortunate tale to tell. In any case, we will need a Moon base in the future, whether we like it or not, so we need to get used with the idea that some of us will have to live up there.

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geek science

How big is the Moon?


The Moon surface would cover Europe, US, China, Brasil and South Africa. It is the firth largest moon in the solar system and it is bigger than the dwarf planet Pluto. Also, the Moon is about 1/81th the mass of Earth.

In any case, considering the human scale, the Moon is freaking BIG.

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geek science

How do we know the moon landing isn’t fake?


Fraser Cain, from Universe Today, reminded us about the fact that Phil Plait already explained why the humans really went to the Moon and why Fox was wrong when airing a conspiracy crap that was telling people that NASA’s Moon landing is a hoax.

Yes, US astronauts really went to the Moon six times and yes, NASA is and was able to run such programs. Watch the movie from above for another reason to NOT believe conspiracies: in order to sustain a Moon landing hoax you would need to keep 400 000 people in line. Kinda hard to do that, isn’t it?

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learn science

Science in 9.99 s: microwave ovens, the dark side of the Moon and blue sky

Minute Physics is at it again: science in under 10 seconds. 9.99s videos are enough to get a broad image and to understand some phenomenons. You only need to check more if you need more info.

Microwaves are electromagnetic waves that can cook our food. They are low energy waves that can heat up matter, but they have a wavelengths bigger than the crystals of glass and thus they cannot escape the oven:

There is no dark side of the Moon. There is, in fact, a side that we do not see, but it has all the cycles of day/night that every revolving cosmic object has. We do not see that side because the Moon orbits around the Earth in the same time it rotates around its axis:

The sky is blue due to the fact that the blue light gets scattered more into the atmosphere than the other colors:

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geek learn

We own the Moon?

Michael Stevens aka Vsauce tells us that the 1979 Moon Treaty says that no one can own any part of outer space. This treaty has only few countries that have signed it, but most of the countries have signed the 1967 Outer Space Treaty that says that outer space is not subject to national appropriation.

That means that you can legally own a piece of the Moon if you can get there. The minor issue is that you wonțt have the protection of your country if someone comes in and steals your home.

In any case, given the fact that you can own a land you set foot on that will help private space agencies to collect and sell a lot of metals around the Globe. Sooner than later we will be a planetary system species who owns more than one planet. A nice thought.