Sunday, July 22, 2018
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Universe/Planets (389)

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Pictures

! EN_01314036_0163 SPL
Blue planet earth with circles, illustration.
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! EN_01314036_0164 SPL
Blue planet earth with circles, illustration.
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! EN_01314036_0165 SPL
Planet earth with circles, illustration.
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! EN_01314036_0166 SPL
Green circles, illustration.
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! EN_01314036_0167 SPL
Green and blue circles, illustration.
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! EN_01314036_0168 SPL
Holographic circles, illustration.
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! EN_01314036_0169 SPL
Holographic circles, illustration.
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! EN_01314036_0170 SPL
World map showing connections, illustration.
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! EN_01314036_0171 SPL
Uranus seen from Titania, illustration. From the night-time surface of Titania, the crescent discs of Uranus and its three innermost large moons glow steadily overhead. Though the planet appears about 13 times larger than our Moon does from Earth it shines as bright as only two full Moons, so feeble is the sunlight.
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! EN_01314036_0172 SPL
Illustration of the Earth, Moon and Sun showing a passing comet. Cities are seen glistening, defining the edges of the Earth's continents. Comets are balls of loosely packed 'dirty ice'. As they near the Sun, their gases sublimate and form long tails blustering away from the star. The tails can stretch for tens of thousands of kilometres, dwarfing even the Earth-Moon separation.
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! EN_01314036_0173 SPL
The Earth and Moon seen from space, illustration.
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! EN_01314036_0174 SPL
The Earth seen from space, illustration.
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! EN_01314036_0175 SPL
Illustration of a comet passing the innermost planet, Mercury, and approaching the Sun.
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! EN_01314036_0176 SPL
Illustration of a free-floating planet. These planets are odd in that, unlike most extrasolar objects, they do not seem to be in orbit around a star - they are free-floating planets drifting between the stars and galaxies. Free floating planets such as these may result from being ejected from a protoplanetary disc due to gravitational perturbations from other massive objects. This planet has cloud bands like those of the gas giant Jupiter.
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! EN_01314036_0177 SPL
Illustration of a free-floating planet. These planets are odd in that, unlike most extrasolar objects, they do not seem to be in orbit around a star - they are free-floating planets drifting between the stars and galaxies. Free floating planets such as these may result from being ejected from a protoplanetary disc due to gravitational perturbations from other massive objects. This planet has cloud bands like those of the gas giant Jupiter.
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! EN_01314036_0178 SPL
Conceptual illustration of a space station, terminal or habitat in Earth orbit in the future. People are seen pointing outside, and one of them is using a telescope.
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! EN_01314036_0179 SPL
Illustration of the Universe's first generations of stars. Scientists estimate that the first stars began to shine when the Universe was just 180 million years old, a fraction of its 13.8-billion-year age. Astronomers have detected these stars indirectly for the first time, by observing the signals in hydrogen gas that these stars illuminated. These stars are theorized to have been very massive, burning through their hydrogen supplies in around a million years or so, and then turning into the red giants and supergiants seen in this illustration.
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! EN_01314036_0180 SPL
Illustration of a sungrazing comet. These are comets that pass very close to the Sun at perihelion. Sometimes they can skirt above the photosphere at distances of just a few thousand kilometres - the mere diameter of a small planet. Occasionally comets are completely evaporated in this process, but some can last several passes before either falling into the Sun or disintegrating because of tidal forces.
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! EN_01314036_0181 SPL
Illustration of a free-floating planet in front of a lenticular galaxy. These planets are odd in that, unlike most extrasolar objects, they do not seem to be in orbit around a star - they are free-floating planets drifting between the stars and galaxies. Free floating planets such as these may result from being ejected from a protoplanetary disc due to gravitational perturbations from other massive objects. This planet has cloud bands like those of the gas giant Jupiter.
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! EN_01314036_0182 SPL
Illustration of a Voyager probe at the Oort cloud. The two Voyager probes were launched in late 1970s. Voyager 1 has now passed into interstellar space - beyond the influence of the Sun's magnetic field - and Voyager 2 is set to do so in the early 2020s. Some 300 years from now, the probes will enter the beginnings of the Oort cloud - a swarm of inert comet nuclei surrounding the Sun up to perhaps 50,000 astronomical units from it. The cloud is so vast that the probes are expected to take around 40,000 years to pass through it into clear space.
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