nebulae

A nebula (nebulae is the plural) is a cloud of gas in a galaxy which stars are born in. As the soon to be star's gravity grabs the gas surrounding it, it ignites into a protostar. Some protostars are so massive that they explode before they start a nuclear fusion. A nuclear fusion is where the star starts burning hydrogen. Some nebulae take animal or human-like shapes like the horse head nebula which I posted yesterday. Or the Eskimo nebula which is going to be posted at the end of this post. Most nebulae contain of the gasses hydrogen,helium and a very,very small amount of methane. The amount of gas the star gets to grow usually depends on how big the nebulae, nebulae can grow from less than a light year to 100 light years or more. A nebulae called a planetary nebulae are the remnants of a sun like stars death. These rarely produce stars and sometimes don't before the white dwarf in the middle of the nebulae fades away. A famous planetary nebula is the cat's eye nebula, which I will also be posting at the end of this post, which is now do tune in tommorow for another juicy fact!

 Eskimo nebula

cat's eye nebula

The horsehead nebula

Beautiful isn't it

intelligent civilizations

This equation was thought of in the 1960's by the scientist Frank Drake. It states that there are 10,000 intelligent civilizations in our galaxy, it's Drakes equation!. The first bit of the equation is how many stars are made per year in our galaxy's nebulae. The answer is 10 per year. Then how many of these planets will have planets. the answer is 90% to 100%. Then how many of those planets are in the habitable one of their star where it is neither too hot or too cold. The average is 1 or 2. The next bit is how many of those planets will develop life. The answer is 50% (I think) Then the ones that will develop intelligent life. Well that can be anything from 1% to 100% depending on how many natural disasters there are every year. So once the intelligent life develops there are two more keys for intelligent life, the important of the two is that the life form must learn not to destroy themselves with their own technology and the last one being that the life must develop interstellar communications. Also i mentioned that i would tell you how to prevent our extinction, well most natural disasters are not bad ebough to make us extinct but meteorites and climate changes. Well climate changes happen over hundreds of thousands of years so our descendents will figure out that. But meteorites are very common so we need to prevent our extinction one idea is to put rocket engines on the meteorite and push it out of its orbit, and the more possible idea is that we blow up the bject with a nuclear bomb, well thats it followers tune in tommorow for a new update!

first post,first fact

I will be posting about space facts everyday (if I can) i will explore space in depth or maybe in 2 parts or more. Ok, so my first fact, Exoplanets. Exoplanets are planets outside of our own solar system. Most exoplanets are Jupiter sized planets or bigger. But out of the 500 exoplanets discovered in our galaxy, a small fraction are rocky like Earth.And those that are, are not in the habitable zone of their star. But scientists have estimated that there are more than 1 trillion planets in our galaxy alone. Some containing single celled organisms and some containing intelligent life like our own. Despite Humans attempts to contact other intelligent life in other solar systems, most that arrived at their destination have failed, however,a majority of the ones that have not reached their destination yet will reach the destination in the next decade. And the rest will span from 100 years to 50,000 years. So the future to contact other civilizations looks bright and promising. Unfortunately, the SETI programme ran out of funds this year so it may damage our chances of finding other life but it probably will be set up again after the current recession is over. On the next post I will be covering drakes equation and the key points for intelligent life in our universe and what we can do to prevent our extinction. That is your daily post from my blog, universe daily.