An astronomer reports they have measured the parallax angle of 10 arc seconds for a star. which is reasonable as "the smaller a star's parallax angle, the further away it is."
What is parallax angle?
A parallax angle is the distance evaluated from a nearby star between both the Earth at one time year and the Earth six months after that.
Some key features regarding the parallax angle are-
- Astronomers are using this angle to calculate the distance between Earth and a star.
- Astronomers examine the sky on a particular timeline and then again six months later to determine how much a neighboring star appears to shift in relation to the background.
- The angle at which these astronomers measure the star to move is the same angle at which they would see the Earth keep moving if they could make the journey to the star.
- Scientists have all the information individuals need to calculate the distance to the star because they know how far the Earth has managed to travel in six months (twice distance to a Sun).
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