How close and far something is from you.
Moving toward or away from Earth
Parallax is more accurate for stars that are very far away.
One of the most reliable methods employed presently is using Hubbles Laws and Constant, utilizing the red shift. RED SHIFT A+LS (:
Scientists track tornadoes using Doppler radar and reports from eyewitnesses.
Blue shift as you get closer because by the Doppler effect, the frequency of the light increases, so the light seems more blue. Using the same logic, there is a red shift for light as you move away from stars.
blue shifted
By using the Doppler effect
a radar tracking system using the Doppler effect to determine the location and velocity of a storm, clouds, precipitation, etc. Dop·pler ef·fectnoun Physicsnoun: Doppler effectan increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the redshift seen by astronomers.
Parallax is more accurate for stars that are very far away.
Normal radar sends out radio waves to determine the location of an object. Doppler radar can not only find the location of an object or storm, but using something known as the Doppler effect can determine how fast it is moving towards or away from the radar.
light years
Astronomers are able to determine the speed at which certain redshift stars move using: The doppler effect Radiotelescopes reveal that space is full of: Cosmic microwave background radiation Some astronomers study how matter behaves using: Particle accelerators The idea that everything in the universe came from a single dense ball 10 to 20 billion years ago has been named: The Big Bang Theory -Apex- :)
using a telescope to determine the coordinates of a star
By using the "doppler" effect and measuring the change in frequency.
i have no idea but it uytr
By using some method other than the Doppler effect to calculate the distance of a distant galaxy, and using the Doppler effect to see how fast it moves away from us. A galaxy's distance and how fast it moves away from us are roughly proportional.
by using the position on the sky and the redshift to determine a distance along the line of sight
by using the position on the sky and the redshift to determine a distance along the line of sight