Question

The method of measuring distance in space using parallax is equivalent to surveyors on Earth doing _______________. The smaller the parallax of an object, the greater its __________. When we measure parallax, the distance between the two observers (or two vantage points) is called the ___________. The first parallax to a star was not measured until 1838 because the stars are so _______________. The distance at which a star has a parallax of one second of arc is called a __________. In 1989, astronomers launched a satellite called __________ to measure parallax even better from outer space.

Answer 1

Answer:

Triangulation

Distance

Baseline

Far away

Parsec

Hipparcos

Answer 2

• The method of measuring distance in space using parallax is equivalent to surveyors on Earth doing Triangulation.

• The smaller the parallax of an object, the greater its Distance.

• When we measure parallax, the distance between the two observers (or two vantage points) is called the Baseline.

• The first parallax to a star was not measured until 1838 because the stars are so Far away.

• The distance at which a star has a parallax of one second of arc is called a Parsec. In 1989, astronomers launched a satellite called  Hipparcos to measure parallax even better from outer space.

Astronomers are known to estimate the distance of nearby objects in space through the use of stellar parallax, or trigonometric parallax.

They often measure a star's  movement using the background of more distant stars as Earth revolves around the sun.

With the use of Parallax, one can get the best way to have the distance in astronomy,

Triangulation is often used instead of parallax to know the terrestrial distances by forming triangles with a predefined base and measuring the angles formed with the other two sides.

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