Friday, October 4, 2024
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Astronomy (63)

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Pictures

EN_00966278_4335
EN_00966278_4335

Mechanical model of the solar system.

EN_00966278_4336
EN_00966278_4336

Mechanical model of the solar system.

EN_00966278_4337
EN_00966278_4337

Mechanical model of the solar system.

EN_00966278_4338
EN_00966278_4338

Mechanical model of the solar system.

EN_00966278_4339
EN_00966278_4339

Mechanical model of the solar system viewed from below.

EN_00966278_4340
EN_00966278_4340

Mechanical model of the solar system viewed from above, with a nebula in the background.

EN_00966278_4341
EN_00966278_4341

Mechanical model of the solar system viewed from above, with a nebula in the background.

EN_00966299_1199
EN_00966299_1199

Illustration of a quasar, viewed from an icy, rocky celestial body. Quasars (quasistellar objects, originally known as quasistellar radio sources), are very distant starlike bodies that have extremely high energy outputs.

EN_00966299_1207
EN_00966299_1207

Illustration showing comet Shoemaker Levy 9 with string of pearls. In 1994, July 16-22, pieces of the comet impacted Jupiter's southern hemisphere.

EN_00966299_1212
EN_00966299_1212

Illustration showing close binary star system.

EN_00966299_3461
EN_00966299_3461

Star on rim of total eclipse.

EN_00961178_6401
EN_00961178_6401

Digital Image of Earth and Moon in Space

EN_00961178_6517
EN_00961178_6517

Satellite and Earth

EN_00961205_4088
EN_00961205_4088

Computer Illustration

EN_00958297_0947
EN_00958297_0947

Optical image of Mars with an illustration showing it's core, mantle and crust. Current studies say its core consists primarily of iron with about 14-17% sulfur, and is about 1480 km in radius. The core is surrounded by a silicate mantle that formed many of the tectonic and volcanic features on the planet, but now appears to be inactive. The average thickness of the planet's crust is about 50 km, while the maximum thickness is about 125 km. In comparison, Earth's crust, averages 40 km, and is only one third as thick as the crust of Mars.

EN_00958297_0948
EN_00958297_0948

Optical image of Mars with an illustration showing it's core, mantle and crust. Current studies say its core consists primarily of iron with about 14-17% sulfur, and is about 1480 km in radius. The core is surrounded by a silicate mantle that formed many of the tectonic and volcanic features on the planet, but now appears to be inactive. The average thickness of the planet's crust is about 50 km, while the maximum thickness is about 125 km. In comparison, Earth's crust, averages 40 km, and is only one third as thick as the crust of Mars.

EN_00958297_0949
EN_00958297_0949

Illustration showing the core, mantle and crust of Jupiter; the fifth planet from the sun and the largest in the solar system. Jupiter has a rocky core and is surrounded by a dense metallic hydrogen layer, which extends outward to about 78 percent of the radius of the planet.

EN_00958297_0950
EN_00958297_0950

Illustration showing the core, mantle and crust of Jupiter; the fifth planet from the sun and the largest in the solar system. Jupiter has a rocky core and is surrounded by a dense metallic hydrogen layer, which extends outward to about 78 percent of the radius of the planet.

EN_00958297_0951
EN_00958297_0951

Illustration showing the core, mantle and crust of Mercury. Geologists estimate that Mercury's core occupies about 42% of its volume; in comparison, for Earth this proportion is 17%. Recent research suggests that Mercury has a molten core with a mantle of silicates, 500-700 km thick, surrounding it. Mercury's crust is believed to be 100-300 km thick based on data gathered from earth based observation, and the mariner 10 mission.

EN_00958297_0952
EN_00958297_0952

Illustration showing the core, mantle and crust of Mercury. Geologists estimate that Mercury's core occupies about 42% of its volume; in comparison, for Earth this proportion is 17%. Recent research suggests that Mercury has a molten core with a mantle of silicates, 500-700 km thick, surrounding it. Mercury's crust is believed to be 100-300 km thick based on data gathered from earth based observation, and the mariner 10 mission.

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