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Why are astronomers so confident that extrasolar planets exist.?
Wiki User
∙ 13y ago
Honestly, I'm not qualified to answer this--it's beyond me, but now I'm keenly interested... (The best way to study for school is to get the info through research. Trust me, you'll remember it that way.)
Definition: An exoplanet aka extrasolar planet is simply a planet outside our solar system. Exoplanets are defined as planets orbiting a star (sun) other than ours.
Why we do it: They exist in our universe. Therefore they must in other solar systems. It says the search is specifically to find Earth-like planets that can -or do- support life. It is also categorize the types of planets and further map our region of the Milky Way.
Ultimately, it's done because humanity has wondered since the ancient Egyptians (one of the oldest cultures I personally know of) if we are alone in the universe. Some people have cited the creation myths of religions as proof alien beings have visited from other worlds, notably the Genesis creation myth. Hindu and Norse religions held there were multiple worlds beyond ours. Native American tribes such as the Cherokee (Grandmother Spider) and the Hopi Spider Woman myths among others. Even the Babylonians and Greeks had a concept of a place beyond Earth where beings lived.
That being said, some planets in our solar system (giants such as Jupiter and Saturn are classified as typical extrasolar planets). NASA plans to journey over the next 15 years because again, if we have a solar system with a planet that supports life, it stands to reason we are not the only solar system that has one (or more). NASA plans to study atmospheric conditions, concentrating on finding ozone, carbon dioxide and ozone.
Wiki User
∙ 13y ago
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How do you find out what planets still exist and the planets that does not exist?
yu might want to rephrase this question it dont make no sense
How do astronomers observe planets that are too far away to see?
Space Telescopes Planets that are orbiting stars that are far away creating fluctuations in the light that we see coming from the star. Astronomers can observe those planets by measuring the fluctuations of that light.
Do other planets orbit the sun?
yes they do Another Answer: The eight known planets in our solar system do. There is no evidence that others exist.
What is the aspects of nature investigated by an astronomers?
Technically, astrophysicists study how stars work. They also get involved in cosmology and the dividing line is not sharp.
Are there some planets that are not in the solar system?
Name the planets that do not exist in the solar system
How many basic planets are there?
Currently there are 353 known extrasolar planets (that is to say, outside of our solar system), but it is unknown how many planets exist in the universe.
Which planet do most known extrasolar planet most resemble?
Of what we have found most are the size of Jupiter or larger. But we know many more extrasolar planets exist that we simply cannot detect. If we were to draw hypotheses on what planets are most abundant they would either be similar to dwarf planets. Or, if the reader does not view dwarf planets as true planets then planets the size of ones in the terrestrial zone like: Mercury, Venus, or Earth. Are probably the most abundant.
Why are astronomers finding planets with half the mass of Jupiter?
There are three main reasons for this phenomenon: 1). Those objects exist. 2). Technology has advanced to the level capable of identifying them. 3). Astronomers are looking for them.
Why water remain liquid on earth compared to other planets?
The earth is in what astronomers call the 'Goldylocks Zone': Just the right distance from our sun that liquid water can exist.
How do astronomers know that invisible stars exist?
By their gravitational effects.
What would the world be like if astronomers didn't exist?
we would not be on this earth
How do you find out what planets still exist and the planets that does not exist?
yu might want to rephrase this question it dont make no sense
Do landforms exist on other planets?
yes
If there was no planets what will happen?
This question would not exist!
How do astronomers observe planets that are too far away to see?
Space Telescopes Planets that are orbiting stars that are far away creating fluctuations in the light that we see coming from the star. Astronomers can observe those planets by measuring the fluctuations of that light.
Do fairies exist on other planets and in other galaxies?
no fairies don't exist any where..
Does weathering exist on other planets or moons?
It obviously does.
