How far our planet orbits from the sun, along with other factors such as atmospheric composition, a carbon cycle and the existence of water, has told astronomers much about the conditions that are required for life to not only originate, but to survive on rocky worlds. This distance from a star is referred to, quite simply, as the 'Habitable Zone' or sometimes the 'Goldilocks Zone'' because conditions here are neither too hot or too cold for water to be liquid on the planet’s surface — conditions just right for lifeas we know it to thrive. [ Gallery: The Strangest Alien Planets ]
Copernican theory tells us that our world is a typical rocky planet in a typical planetary system. This concept has spurred some astronomers to start thinking bigger, way beyond the simplicity of any one planetary system and instead towards much grander scales.
Astronomers are exploring whether there is a Galactic Habitable Zone (GHZ) in our Galaxy — a region of the Milky Way that is conducive to forming planetary systems with habitable worlds. The Galactic Habitable Zone implies that if there are conditions just right for a planet around a star, then the same must go for a galaxy.
ALMA is a astronomy center, and it will the most center in the world and can search in the origins of the universe and search planets in the most luminous galaxies, and is located in Chile. Its important because the scientific can search other habitable planets
ReplyDeletedaniel lopez
The habitable zone (HZ) is a theoretical shell surrounding a star in which any planet present would have liquid water on its surface. After an energy source, liquid water is considered the most important ingredient for life, considering how integral it is to all life-systems on Earth. This may reflect the bias of humanity's water-dependent biology, however, and if life is discovered in the absence of water (for example, in a liquid-ammonia solution).
ReplyDeleteThe life in the earth is a special form of the life, maybe in other places in the space, there is life but no with the same caracteristic that the Earth.
ReplyDeleteas there is life in the Earth also there are life in others places,but with different form.
ReplyDelete(Santiago Londoño)
is still a mystery if we share the universe with other beings, but for me no doubt that if there is somewhere else, you may not like us, but could be better or worse to us.
ReplyDeleteIt is selfish to think we are unique, irreplaceable, and I think we simply have to be ready by the time of the meeting.
(Clara Velasco Pombo)