Alien Earths | Alien Earths - National Geographic Channel [ 2 of 5 ]

Join leading astronomers on a visual journey beyond our solar system in search of planets like Earth. Using CGI animation, we'll explore bizarre worlds that stretch our imagination: planets with iron rain and hot ice, with diamonds everywhere, and endless oceans of gas. Planets with abnormal orbital patterns and planets with no pattern at all that drift alone in the Milky Way. Planets so strange we never could have predicted them before. Could life exist there?

Category:

Education

Tags:

• GAS GIANTS
• HOT JUPITERS
• SUPER EARTHS
• DWARF PLANETS AND PLUTOIDS
• DOUBLE PLANETS
• TERRESTRIAL PLANETS
• ALIEN
• EARTH
• NATIONAL
• GEOGRAPHIC

[4squaredby4times4]

Mars was once an Earth-like planet before it died. According to some theories.

[JimmyMerc89]

O_o

[qwertykidiscool]

@SuperSpaceMaster. The planets that have satellites are called mother planets. The satellites are just that: satellites. It would be highly unlikely for a moon to orbit another moon that is orbiting a planet. Also, that moon would have to have an extreme gravitational pull.

[CodeCosmo]

what I wouldn't give for the 9:29 view. <3

[sheleg3s3]

how is O_o a top comment? o_O

[MrFootballstar98]

@4squaredby4times4

my bad i meant pluto was to cold not mars pluto used to contain life but everything died on it the hubbletelescope found that out a couple of days ago

[4squaredby4times4]

@MrFootballstar98 I'm assuming you're being sarcastic. Wrong form of the word you're. And it's too cold, not to cold. Stop being sarcastic. The atmosphere on Mars is the closest in the solar system to the atmosphere on Earth. There is also evidence of shore lines on its surface. Leading many scientists to believe that it was an Earth-like planet. Keep an open mind. Mars was too hot? What? Mars is cold silly.

[MrFootballstar98]

@4squaredby4times4

Your right same with pluto mars was to hot and pluto to cold so all life died on it but not many people know about pluto

[The1Skinsfan]

Cool.

[yourfunnyhehe1212]

@hlubgtiaproduction Remember that to support life you need the elements hydrogen, oxygen, sodium.. etc, so maybe you are correct, like you said, no one knows.

[siewmj1]

@Crunox we will learn from our mistakes, sapient intelligent will enable us not to repeat the same mistake twice.

[sandcut1]

@4squaredby4times4 And it might happen again as our sun heats up and the habitable zone migrates outward.