Rio wrote Is it true the moon is made from cheese?

And yeah completely true, that's why on the Apollo missions they didn't bother taking any food with them, except for crackers and bread! They had all the cheese they could want!

But no haha, the composition of the whole moon is a bit of a mystery, with exceptions to the surface. Scientists have theorized as to the whole composition, which is mainly metallic iron, as well as relatively small amounts of sulfur and nickel.

Mawderz wrote Do you believe there is extra-terrestrial life in the universe? And if these so called 'Greys' are real then what do you think their current civilization status is? We are currently a type 0 civilization so we are far off any good space travel.

This is a question with only one answer for those of us who study astronomy, cosmology, astrophysics etc.

Yes, there is no doubt in mind that there is Extra-terrestrial life in the Universe, very likely even intelligent life.

You see, there are over 50 billion galaxies in the visible Universe, however estimates of how many galaxies there are in the entire Universe go as high as 500 billion, and some people even believe infinite amounts.

However, for arguments sake, we'll say there are just the 50 billion galaxies in the universe, the one's we can see. On average, there are around 400-500 million stars per galaxy, but we'll call it a flat 500 million to keep the maths round.

So that's 500 million multiplied by 50 billion to get an estimation for how many stars there are in the Universe. This gives 2.5*10^19, or 25,000,000,000,000,000,000, that's an estimation of 25 quintillion stars, a rather unfathomable number.

Now lets move onto planets, you see it is very very hard to detect planets, because of how small they are compared to the star they are orbiting, but it is extremely likely for there to be at the very least 1 star per planet, probably more, due to the nature in which stars are formed, which I will not go into detail to.
To give you a perspective of how hard it is to detect planets, it's like getting a huge floodlight, 2x2m, standing 100m away from it with it on, and trying to see, with the naked eye, a dot the size of a pin head, which is why the only planets we have detected are by majority, gaseous giants similar to Jupiter.

So, assuming there are just one planet per star, even though there are likely to be more, like our star, we have over 25 quintillion potential planets. Now if you can tell me, that with this many potential planets, that on just another one of those planets, the blocks fall in the right place to end up with life.

Most people believe there are hundreds, if not thousands or more, other planets with developed life out there.

As for the "greys", I am skeptical, if the Universe is as vast as it is estimated, there is a probably chance that it just so happens that somewhere out there, life develops in such a way to give humanoid life, i.e the greys.

Some people believe the greys, or other aliens of this type, watch over our planet, and controlled our evolution, hence why we look so like them, but of course I am very skeptical of these theories.

But I personally don't see why there couldn't be other intelligent, developed, life out there, but as for aliens visiting Earth? I am skeptical, I would like to believe that aliens have visited Earth, but due to the vastness of the Universe, it may be unlikely that they have.

Hope this helps.

InvisibleWarrior wrote do you believe in life on mars ?

At this current moment in time? No I definitely do not believe in martian life.

However it is possible, and some scientists believe there is evidence on the surface of mars, of previous microbial life. As there used to be lakes, and rivers etc on Mars. As there used to be liquid water, before Mars lost it's atmosphere and became colder and colder, evaporating and freezing any liquid water left on the surface of Mars, some people do believe microbial life was possible on Mars, thousands of years ago when it did have an atmosphere, but it is hard to tell whether there was or not, though there is certainly no life left on the surface of Mars.

What did the Nebula create ?

why dont we build a massive cannon in space and fire a rocket with people on it out into deep space? instead of firing it from earth?

are koreans on the moon as we speak?

Larsson wrote What did the Nebula create ?

Nebulae are gigantic, and I mean MASSIVE, so called clouds of gas and dust. By majority the gas that makes up nebulae is Hydrogen.

Nebulae are sometimes called "Stella Nurseries", as these copious amounts of hydrogen gas is all that is required to create stars.

interest wrote why dont we build a massive cannon in space and fire a rocket with people on it out into deep space? instead of firing it from earth?

A cannon haha? I see what you mean, but because that idea is flawed. It's all well and good having this cannon in space, but we would still have to get people into space to be fired from it. This type of machine would also probably need round the clock engineers working on it, which is less than convenient.

Also, as we would have to put people in a rocket to get them to space, it would probably be more effective just to leave them in the pod they are already in, with a fuel source to start accelerating them once they are free of air resistance.

It is probably just easier to keep space travel as we do at the moment, as we have used the same source for getting people, or satellites, into space, has been the same for the last 50 years, give or take.

Teachers wrote are koreans on the moon as we speak?

I highly doubt it, seeing as, in terms of technology, the koreans are not very far along the line. I don't think they have the technology, or resources, to get into space for another good 10 years or so.. I'm talking about putting people into space.

I don't even know if they have a space program, probably not with all the war mongering Kim Jong Un is doing.

Mawderz wrote Do you believe there is extra-terrestrial life in the universe? And if these so called 'Greys' are real then what do you think their current civilization status is? We are currently a type 0 civilization so we are far off any good space travel.

I want to know who disliked this question. In my opinion it was a great question and found myself thinking this aswell.