how many other planets have/had oceans/water?

Answer 1

Mars they claim had a watery past, Jupiters moon Europa is believed to have an ocean below its surface ice but of course that is not an answer to your question, I think mars is the only candidate,,,

PODCAST, DISCOVERY OF WATER ON MARS IN THE LAST FIVE TO SEVEN YEARS,

http://www.nasa.gov/163951main_jpl-mgs-20061206.MP3

Another interesting read is about Europa,,

http://www.universetoday.com/2007/12/04/europas-ocean-thick-or-thin/

Answer 2

Venus, Jupiter, Saturn, Uranus and Neptune all have water vapor in their atmospheres. A large number moons, trans-Neptune bodies such as Pluto and most comets have a high water ice content

There is strong evidence that there was once water on Mars but we're not too sure if it's still there, but in all likelihood it locked under the surface.

Europa, one of the moons of Jupiter almost certainly has a sub-surface ocean covered an ice sheet several kilometers thick.

Answer 3

Space is so intresting, with so much to think about. With so many planets out there, i think there has to be planets that have oceans/water. But i think if a planet did have any kind of water, it would be ice.

The thought of other planets like Earth is simply fascinating.

Answer 4

There is water in the form of ice on Mars. Aerial images of Mars show dry canyons and river beds indicating that there was surface water on Mars at one time, but it appears to be from flooding after a heavy rain rather that an ocean system similar to Earth's. No liquid water is found on Mars presently.

There is also water in the form of ice on Pluto (although Pluto may no longer be classified as a planet).

Water in the form of vapour is found on Venus, Neptune, Saturn, Uranus and Jupiter (Saturn's rings are ice, though that is not really "on" the planet). Some scientists even think there may be water in the form of ice on the poles of the very hot Mercury.

It does not appear that there is water or ice on our moon, probably due to its low gravity allowing all water vapour to escape into space. Many of the moons of the Jovial planets have water in the form of ice and some may even have liquid water.

Europa, Jupiter's iciest moon has hexagonal water-ice crystals on its frigid surface and some scientists theorise that there may be liquid water under the ice's surface. If in fact there is liquid water on Europa it would be a great place to look for life outside of Earth's environment.

Because of the distances, we cannot see water on planets outside our solar system. It is likely that our solar system is nothing special and that most planets in the cosmos have water on them in some form. In the future scientists may be able to prove there is water and even liquid water in other planetary systems using a spectrograph of the light reflected off of them.

Answer 5

Other than Earth, none for certain.

Although, it's looking quite likely that Mars had some at some point in the distant past - and Europa, one of Jupiter's moons is covered in ice, which could be covering oceans.

Answer 6

The only confirmed oceans on celestial bodies are on Earth and Europa.

Answer 7

Mars has polar ice and was believed to have seas at one point. The Uranus moon 'Europa' is entirely covered in a sheet of ice and it has been theorised that below the ice there could be an enormous ocean, perfect for life to evolve.

Answer 8

Mars

Answer 9

Until now, none discovered ! Nor near neither far.

Answer 10

do your own homework!