Yeah, 2240 lbs is 160 stone!
Earthlike Planets
- Thread starter Fenderman
- Start date
Last night I re-watched one of the BBC programs from their series Wonders of the Solar System. This just happened to be the one about atmosphere.
We need the atmosphere to exist, it controls so many of the planet's systems. If there is too little e.g. Mercury, then there is nothing to slow down objects and the planet gets heavily bombarded, also it gets the full effect of the harmful rays from the sun. With the lack of atmosphere the change of temperature between night and day is very high. Mercury basically lost it's atmosphere very quickly because of it's low gravity and high heat.
Jupiter is the opposite, it has a very deep atmosphere, with no solid centre. The result is massive storms, the red spot is one that has been raging for at least 300 years. It holds on to it's atmosphere because of it's surface gravity which has been calculated as being 2.53 times that of the earth (Jupiter does not have a solid surface so I presume that this gravity is at it's liquid surface). It is also colder than the earth, -108.15 C compared to the earth's 15 C. The density is less than 25% of that on the earth, it's mean circumference is 11 times that of the earth.
So whether or not a planet (or moon) can support life as we know it is dependent on many parameters, which include it's gravity.
We need the atmosphere to exist, it controls so many of the planet's systems. If there is too little e.g. Mercury, then there is nothing to slow down objects and the planet gets heavily bombarded, also it gets the full effect of the harmful rays from the sun. With the lack of atmosphere the change of temperature between night and day is very high. Mercury basically lost it's atmosphere very quickly because of it's low gravity and high heat.
Jupiter is the opposite, it has a very deep atmosphere, with no solid centre. The result is massive storms, the red spot is one that has been raging for at least 300 years. It holds on to it's atmosphere because of it's surface gravity which has been calculated as being 2.53 times that of the earth (Jupiter does not have a solid surface so I presume that this gravity is at it's liquid surface). It is also colder than the earth, -108.15 C compared to the earth's 15 C. The density is less than 25% of that on the earth, it's mean circumference is 11 times that of the earth.
So whether or not a planet (or moon) can support life as we know it is dependent on many parameters, which include it's gravity.
Kepler has found a sun with odd things in orbit.
SETI are going to try and detect radio waves from it in a search for signs of alien life.
Interesting stuff.
Astronomers Have Spotted Something Very, Very Strange Surrounding A Distant Star
SETI are going to try and detect radio waves from it in a search for signs of alien life.
Interesting stuff.
Astronomers Have Spotted Something Very, Very Strange Surrounding A Distant Star
Incubus
Champion Elect
Yeah, but I don't know why when it comes to astronomy people are so obsessed about the search for life. I always found life just about the least interesting aspect of it.
i mean what's so special about life, we got plenty of it on here and it's all a bit boring at times so why get so excited about the possibiity of other boring people 500 light years whom we'll never be able to meet anyway?
i much prefer reading about truly weird stuff about black holes or monster galaxies canibalising each other. Much more interesting.
Aliens are just boring aren't they? Smug little green bastards...
i mean what's so special about life, we got plenty of it on here and it's all a bit boring at times so why get so excited about the possibiity of other boring people 500 light years whom we'll never be able to meet anyway?
i much prefer reading about truly weird stuff about black holes or monster galaxies canibalising each other. Much more interesting.
Aliens are just boring aren't they? Smug little green bastards...
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Incubus
Champion Elect
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By the Greenlantern101 that last bit was strictly directed at the aliens and should in no way be misinterprated as a racial slur against yourself nor your kin.
I've lot loads of green friends y' know.
Well that's just racist. twice. You will be telling me you hate the Smurfs and the Simpsons next. 
Why is Greenlantern101 a little green man anyway ? 
I have to say I'm not to keen on smurffs Greenlantern101 , they are blue.
But an alien planet capable of supporting life........ Blue, green, purple people, it would be interesting at least. Who knows, they may be nicer than us Incubus .
I have to say I'm not to keen on smurffs Greenlantern101 , they are blue.
But an alien planet capable of supporting life........ Blue, green, purple people, it would be interesting at least. Who knows, they may be nicer than us Incubus .
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Well to be fair I have been drinking.
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I was at a presentation last week where one of the people speaking mentioned Hubble 2 (his company is making the reflector) so I thought I'd have a quick search for what's going on and here's some facts.
10 Things You Didn't Know About The Hubble Replacement - Listverse
10 Things You Didn't Know About The Hubble Replacement - Listverse
Why do people feel the need to dumb everything down, couldn't he of just called it by its actual name 'The James Webb Space Telescope' and described it as a new space telescope rather than Hubble 2.
If anything it is rather disrespectful to James Webb and the people involved to call it Hubble 2.
James Webb Space Telescope (JWST) NASA
No aliens. At least not yet. 
Search For Extraterrestrial Intelligence Institute Release First Observations From "Alien Megastructure" Star
Search For Extraterrestrial Intelligence Institute Release First Observations From "Alien Megastructure" Star
