Measuring Distances in Space

Earth Science - Middle School

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© Copyright NewPath Learning. All Rights Reserved. 94-4580 Visit www.newpathlearning.com for Online Learning Resources. Measuring Distances in Space Photos courtesy of NASA. Astronomical Units The distance between the Earth and the Sun is approximately 150 million kilometers, or one astronomical unit (AU). Scientists use astronomical units to measure and describe distances in space. Another measurement is called a light-minute, which is the distance light travels in one minute, or approximately 18 million kilometers. Distance Between Planets and the Sun The dimensions of our solar system are vast. The four inner planets are much closer to the Sun than the four outer planets. There are numerous orbiting comets found beyond the planets in the outer solar system. Sun Earth
Pause and Review This overview gives you an idea of the great distance between the planets! Measuring Distances in Space 5 0101520253035404550556065707580859095 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 240 245 250 255 235 Use the closer views below to measure each planet’s distance from the Sun in light minutes. Use the information on the front of this chart to complete the data table. 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 240 245 250 255 235 5 0101520253035404550556065707580859095 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 240 245 250 255 235 © Copyright NewPath Learning. All Rights Reserved. 94-4580 Visit www.newpathlearning.com for Online Learning Resources. Inner Planets Outer Planets Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Distance from the Sun Distance from the Sun Size (km) Size (km) Sun Sun Mercury Mercury Venus Venus Earth Earth Mars Mars Jupiter Saturn Uranus Neptune DAWN JUNO CASSINI NEW HORIZONS DAWN JUNO NEW HORIZONS Jupiter Saturn Uranus Neptune Light Minutes Light Minutes Light Minutes