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Astronomy & Space Far Out Measuring the Universe |
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| Series: | Show Me Science Advanced Astronomy & Space |
| Item No: | K4621 |
| Length: | 11 minutes |
| UPC: | 709629046214 |
| Copyright: | 2014 |
| CC: | Yes |
| MARC Record: | Yes |
| Language: | English |
| Grade Level: | 6-12 |
| Age Range: | 12-18 |
| View Series | |
| SRP: | $44.95 |
| Purchase Options: |
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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.
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