Uranus is taking a battering

Hubble captures rare triple moon transit of Jupiter......

http://www.spacetelescope.org/news/heic1504/

MacBuddhaBurger wrote:......no place to land, and the turbulence would be terrible.

No I said I was glad Earth wasn't as big as Jupiter as planes would not be able to fly that far (on earth if it were as big) without constantly landing and refueling.

I understand that we couldn't live on Jupiter. And I understand we couldn't fly to Jupiter.

EarlyMorning wrote:

MacBuddhaBurger wrote:......no place to land, and the turbulence would be terrible.

No I said I was glad Earth wasn't as big as Jupiter as planes would not be able to fly that far (on earth if it were as big) without constantly landing and refueling.

I understand that we couldn't live on Jupiter. And I understand we couldn't fly to Jupiter.

Ah ha

I see.

On a Jupiter sized Earth, gravity would be a problem. We would probably look like pancakes. So not sure how aviation would cope, but the fashion trade could take a hit.

oo would gravity be a problem? isn't that just down to how fast the planet spins or no? We have gravity and other planets don't do they?

I'm not good with physics so I do not know.

It's very interesting though.

Gravity differs depending on what planet you are on. This is because the planets vary in size and mass.

Mercury is the smallest planet with the least mass and the least density. The gravity on Mercury is only 38% of the gravity on earth. Considering Mercury only has a radius of 4,879 km, which is barely any larger than the Moon, the gravity is high. The high gravity is due to the high density of the planet.

Venus is similar in size to the Earth, which is why it is often called Earth’s twin. Its mass, density, and volume are all slightly less than Earth’s. This means that the gravity on Venus is slightly over 90% of the Earth’s gravity. Although you would weigh less on Earth’s twin than you would on Earth, you would not want to visit Venus because of its toxic, burning atmosphere.

The promise of life on Mars has intrigued people for centuries, but what would living on Mars really be like. Well, Mars has a smaller density and mass than our planet, which means that it has lower gravity. In fact, you would weigh less on Mars than you would on any other planet in our Solar System. The gravity of Mars is 38% the gravity of Earth. Could account for the attraction, and should the human species live for long enough, then it could become a temporary home after the Earth becomes uninhabitable due to the sun becoming a Red Giant.

Jupiter is the most massive planet in our Solar System, meaning it also has the highest gravity. If you stood on Jupiter – you cannot because it does not have a solid surface – then you would weigh two and a half times what you would on Earth.

A gas giant, Saturn is more massive than Earth, but it also has the lowest density of all the planets in the Solar System. If you were able to stand on Saturn’s surface, you would experience about 91% of the gravity you would on Earth.

Like Saturn, Uranus is massive, but has a very low density. Because of this combination, Uranus has a low gravity about 89% of the gravity that you would feel on Earth. This is very close to Venus’ gravity although Uranus is more than 14 times larger than Venus is.

Neptune is much more massive than Earth – 17 times Earth’s mass – but it is also much larger than Earth, so it has a lower density. This means that Neptune’s gravity is only slightly more than Earth’s gravity – 14% more. It would not be too uncomfortable walking on Neptune if you could walk on it, which is impossible because it does not have a solid surface.

It's tough out there, and would you really want to be a overweight blobby?

MacBuddhaBurger wrote:Although you would weigh less on Earth’s twin than you would on Earth, you would not want to visit Venus because of its toxic, burning atmosphere.

Bummer.

MacBuddhaBurger wrote:In fact, you would weigh less on Mars than you would on any other planet in our Solar System.

One way ticket there then if I'm still alive when the time comes (which I doubt).

MacBuddhaBurger wrote:Jupiter is the most massive planet in our Solar System, meaning it also has the highest gravity. If you stood on Jupiter – you cannot because it does not have a solid surface – then you would weigh two and a half times what you would on Earth.

Jupiter sucks in many ways.

But even if gravity allowed there is no air so none of them are possible. How would they get air we could breathe on Mars? (as you can tell I am now seriously contemplating the move..)

EarlyMorning wrote:

MacBuddhaBurger wrote:In fact, you would weigh less on Mars than you would on any other planet in our Solar System.

One way ticket there then if I'm still alive when the time comes (which I doubt).

But even if gravity allowed there is no air so none of them are possible. How would they get air we could breathe on Mars? (as you can tell I am now seriously contemplating the move..)

So far there is no need to move for about a billion years. If you are still hanging around by then you would perhaps have noticed that the sun is much bigger than it used to be, it's hotter, and the oceans are evaporating.

Hopefully, long before that, if we haven't found another star to hitch a ride around, we would have started terraforming Mars.

http://science.howstuffworks.com/terraforming.htm

All of this is, of course, surmising that the human species is still around, although if it is there a good chance that it may have evolved into a number of subspecies, some of them, no doubt, robotically or AI enhanced.

Oh man, have I mentioned how much I love this thread?

Jupiter, storms on Uranus, a bit of Pluto-love, Jupiter, amazing pictures of planets millions of miles away, terraforming Mars, Jupiter. Is there any planet more awesome than Jupiter? I'll continue to admire it from a distance though, I don't think I'd want to be crushed to a pancake .

There may be no NEED to move for 1 billion years, but we could go anyway no? Why isn't Branson on this already?!

I will have to read up on how they'd get breathable air there.

EarlyMorning wrote:There may be no NEED to move for 1 billion years, but we could go anyway no? Why isn't Branson on this already?!

I will have to read up on how they'd get breathable air there.

I would imagine that Branson is too busy making money on this planet to actually consider moving to another one. Although i would certainly consider sending him to a place where the sun don't shine if anyone is prepared to put up the finance.

However, as the nearest star (Proxima Centauri) is over 4 light years away, the problem arises as to how to get there without dying of old age or going stir crazy in the process.

If you could invent a Tachyon Drive or bend space then the journey could be possible. At the moment it isn't, unless you use your imagination or learn how to voyage in consciousness.

If you are searching for habitable planets beyond our own solar system than i believe astronomers have suggested that closest bets for habitable planets so far are Tau Ceti e (11.9 light years), Kapteyn b ( 13 light years), and Gliese 581c, d, or e (20 ish light years).

Interesting enough the Dogon people of Mali say that they were taught by beings from the Sirius System ( a bit over 8 light years away), and the Tau Ceti system has been linked to extraterrestrials by the enthusiastical for close encounters.