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Would the parallax shift of a star be greater if seen from mars rather than earth?
Wiki User
∙ 11y ago
No. We can calculate the distance to an astronomical object that isn't too far away by measuring the parallax, or positional shift compared to the background stars, by observing the star from two opposite sides of the Earth's orbit. This gives us a baseline of about 186 million miles, and we can figure out the sides of the triangle using basic math. But beyond a couple of hundred light years, the angular shift is too small to measure.
Perhaps in 30 or 40 years, we'll be able to send space telescopes like the Hubble to orbits out near Neptune or even farther. That will increase our baseline distance 40 times or more, allowing us to use parallax to measure distances out to a thousand light years or more.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoOnly if it's the same distance away as the Earth. Since you're standing on the Earth and the distance is therefore zero, that pretty much means that unless you've got a star in your pocket, the answer is no.
Wiki User
∙ 11y agoYes. Mars has a parallax that is 1.6x that of Earth.
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Which star would have a greater parallax the earth or the arcturus?
Earth isn't a star and doesn't (can't) have a parallax, becuse we use Earth's orbit as a baseline to measure parallax.
Why is the uncertainty in astronomers' knowledge of a star's distance greater for stars that are farther from earth?
I believe that it is all to do with margin of error. The further away the planet, the greater the margin of error in the observations and therefore the greater the uncertainty in their distance from Earth.
If Vega is 25.3 light year from earth and arcturus is 36.7 light years away which star would have a greater parallax explain?
vega its like a triangle the farther away one part is(arcturis) the narower the triangle is (paralax)
The parallax of a star is observed because?
Parallax helps because the bigger the parallax is the closer the star is. Knowing the distance helps to determine the "absolute magnitude" of a star, not just how bright it appears.
What does it mean when a star has a larger parallax than another star?
It means that its apparent movement - due to Earth's movement around the Sun - is greater, and that therefore the star is closer to us.
Which star would have a greater parallax the earth or the arcturus?
Earth isn't a star and doesn't (can't) have a parallax, becuse we use Earth's orbit as a baseline to measure parallax.
Parallax would be easier to measure if?
Parallax would be easier to measure if the Earth were farther from the sun. This way, there will be a wider angle to the stars using the parallax method.
If a star's parallax angle is too small to measure what can you conclude about the star's distance from earth?
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
If a star's parallax angle is too small to measure what can you conclude about the star's distance from the earth?
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
The measurement of the slight back-and-forth shifting in a nearby star's position due to the orbital motion of Earth is called?
parallax
Why is the uncertainty in astronomers' knowledge of a star's distance greater for stars that are farther from earth?
I believe that it is all to do with margin of error. The further away the planet, the greater the margin of error in the observations and therefore the greater the uncertainty in their distance from Earth.
Is parallax a star?
The parallax refers to the apparent change in the star's position, due to Earth's movement around the Sun. This parallax can be used to measure the distance to nearby stars (the closer the star, the larger will its parallax be).
If Vega is 25.3 light year from earth and arcturus is 36.7 light years away which star would have a greater parallax explain?
vega its like a triangle the farther away one part is(arcturis) the narower the triangle is (paralax)
The parallax of a star is observed because?
Parallax helps because the bigger the parallax is the closer the star is. Knowing the distance helps to determine the "absolute magnitude" of a star, not just how bright it appears.
Parallax would be harder to measure if?
A parallax is hard to measure if it is very small - and this happens when the corresponding object is very far away.
What does it mean when a star has a larger parallax than another star?
It means that its apparent movement - due to Earth's movement around the Sun - is greater, and that therefore the star is closer to us.
Which stars have the largest parallax angles-?
the stars nearest Earth
