PV06041309
SHOW ME SCIENCE ADVANCED - ASTRONOMY & SPACE: FAR OUT - MEASURING THE UNIVERSE
How far is a star or a galaxy? Scaling and measuring the cosmos is a complex problem. Scientists are integrating mathematical applications and scientific technology to create standards. Distances are so vast they are described in light years the distance light travels in a year. Nearby stars are measured by trigonometry the technique of parallax. Farther out, astronomers use so-called standard candles, the Type Ia supernovae is the standard candle basis. Beyond that the electromagnetic redshift of galaxies reveals their distances.
DVD
High School or above
11 minutes
2014
Requirement
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