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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.
What are two ways the atmosphere limits what astronomers can detect?
i think because of pollution and lots of light
Why can't hubble be used to detect extrasolar planets?
It actually can and is used to detect extrasolar planets, mostly through watching their transits, where they move in front of the star and block some of its light.
How do astronomers discover planets orbiting stars other than the sun?
Several methods are used. In many cases - perhaps most cases - the planets are discovered due to their gravitational effect on the star. That is, the star "wobbles" due to the gravitational pull of nearby planets, especially if the planets are very massive (planets more massive, "heavier" in popular language, than Jupiter, are easiest to detect), and close to the star. In some very specific cases, the planet may go right in front of the star, and make it become slightly dimmer once every orbit.
How do you know which stars have planets?
What an excellent question. It appears you already realize that if you are talking about stars other than our sun, you are talking about stars that are many lightyears away from us, and not even powerful telescopes will easily detect planets orbiting around them. One thing that astronomers can sometimes detect is the slight wobble of distant stars as planets orbit around them. You might not realize that suns would move as a result of a planet's orbit. Imagine you and a friend holding on to the ends of a rope. If you begin to move in a circle, you will each feel the centripedal force pushing you outward. Neither of you would be able to stand perfectly still while the other circled with the rope. Another thing that astronomers can detect using very sensitive equipment is the slight reduction in brightness of a star when a planet's orbit brings the planet between us and its star. If this reduction in brightness is regular enough, it may be an indication that there is a planet in orbit.
Why do you suppose all the other sun like systems we know about have only 1 huge planet within 2 AU of its star?
We currently have the ability only to detect large planets that are close to their parent star, but as the technology progresses, we will be able to detect smaller planets, and planets that are further away. Also, astronomers have found systems of planets, meaning stars that have more than 1 planet.
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.
Which wavelength of radiation do astronomers use to detect these hottest stars in our galaxy?
infrared
What do astronomers use?
Astronomers can use their eyes to study the stars. They can also use various telescopes that either refract, reflect, and detect exotic formations.
What is the first planet outside our galaxy recently found by astronomers?
No planets have been officially recognised outside our galaxy, though more than 500 exoplanets have been identified outside our solar system. Our nearest galaxy is too far away to detect such planets, though we can assume that it will contain several millions of planets based on observations within our own galaxy.
Which galaxy are planets in?
It is possible that every galaxy has some planets. We just are starting to detect some planets in other galaxies.
What are two ways the atmosphere limits what astronomers can detect?
i think because of pollution and lots of light
Why can't hubble be used to detect extrasolar planets?
It actually can and is used to detect extrasolar planets, mostly through watching their transits, where they move in front of the star and block some of its light.
How can astronomers tell what a distant object's velocity?
By using the habo space telescle to detect the object's velocity
Why do astronomers use molecules such as ammonia carbon monoxide and water to detect the structure of molecular clouds?
Their presence indicates the existence of molecular hydrogen, which is abundant but hard to detect.
Are there many solar systems within a galaxy?
Oh, very likely, but astronomers are only just beginning to detect them. Whether any contain planets that may support some sort of life is another matter. There is no reason to think not but we may never know for certain.
How do you detect planets forming around a star?
You can detect planets around are star only if they are of sufficient mass, They will cause the star to wobble (due to its gravity) as it rotates this can be seen and the position of the planet inferred.
