Your Definition Of An Earth-Like Planet?

  • Thread starter Thread starter Gold Barz
  • Start date Start date
  • Tags Tags
    Definition Planet
AI Thread Summary
An Earth-like planet may be defined as a terrestrial planet with similar amounts of water and oxygen, but opinions vary on whether it needs to closely resemble Earth in other aspects. Some argue that a planet with just water and oxygen could be common, while a planet that truly mirrors Earth's conditions, including life, would be exceedingly rare. The discussion highlights the complexity of defining "terrestrial," suggesting that life presence is crucial for a planet to be classified as Earth-like. The consensus on the abundance of Earth-like planets remains unclear, with varying views on their commonality in the universe. Ultimately, the definition of an Earth-like planet is still a topic of debate among scientists and enthusiasts alike.
Gold Barz
Messages
464
Reaction score
0
Would it be just a terrestrial planet with a similar amount of water and oxygen as Earth? and of course similar distance from the sun or would it have to really resemble Earth?

The former one I don't think would be all that rare but the latter one would really really be rare, exceedingly rare.
 
Astronomy news on Phys.org
What is the current consensus on Earth-like planets now?

Abundant? common? alot? some? fraction? rare?
 
Huh, that's something to think about. Terrestrial means of or realting to or composed of land as well as biology; living or growing on land; not aquadic. So it might not be a terrestrial plant it if just has water and oxygen the way Earth does. It would need to have some form of life on it to be considered a terrestrial. Anything that moved there would be extraterrestrial since it did not originate on the plant.

Humans are terrestrials to Earth. However there are some humans I'm not so sure about.:wink:
 
TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
Thread 'Could gamma-ray bursts have an intragalactic origin?'
This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
Back
Top