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How can astronomers detect dark matter if they cannnot observe it directly?
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What machine measures the distance between us and a black hole?
There is no special machine that measures that directly. Astronomers have to observe objects known to be close to the black hole (most black holes observed are part of a binary or multiple system, simply because those are easier to detect), and use one of the usual methods used in astronomy to calculate distances.
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 are synonyms for observe?
detect, perceive, witness, see, spot
What are three synonyms for the word 'observe'?
detect, watch, remark
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
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.
How do astronomers know that hydrogen is present in almost every star in the universe?
They detect the absorption lines consistent with hydrogen.
How do you know there are black holes?
Because the astronomers can detect that a star is being whirled around in space, or space is being distorted.
How can astronomaers detect dark matter if the cannot observe it correctly?
say my name say my name
