By Editor Jon White
All approximately house booklet of the sunlight approach
- become aware of the very important function the big name on the center of our sunlight process playsThe planets
- In-depth publications to all of the planets, from Mercury to NeptuneThe moons
- Take a better examine the various sunlight structures finest moonsAmazing illustrations
- discover the beautiful points of interest on offerAlso inside...
- an entire advisor to the Sun
- sunlight flares
- the outlet within the Sun
- sunlight maximum
- a glance at Earths moon
Read Online or Download All About Space Book of the Solar System PDF
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Extra resources for All About Space Book of the Solar System
Mercury also has a magnetosphere, formed when the solar wind interacts with its magnetic field. Although that magnetic field is only about one per cent as strong as Earth’s, it traps in some plasma from the solar wind, which adds to its surface weathering. The Messenger spacecraft discovered that Mercury’s magnetosphere is Pit-floor craters These craters are irregularly shaped and may be formed by the collapse of magma chambers below the surface Impact craters These craters can be hundreds of kilometres across, and can be fresh or very decayed “Because of its small size and wide changes in temperature, the planet doesn’t have a true atmosphere” 48 somewhat unstable, causing bundles of magnetic fields to be pulled out into space and wrapped into tornadolike structures by the passing solar wind.
Even stranger than this, when Mercury is at its perihelion (closest to the Sun), its revolution is faster than its rotation. If you were standing on the planet’s surface, the Sun would appear to be moving west in the sky, but then stop and start moving very slowly eastward for a few days. Then as Mercury starts moving away from the Sun in its rotation (known as aphelion), its revolution slows down and the Sun starts moving westward in the sky again. Exactly how this might appear to you would depend greatly on where you were located on the planet and where the Sun was in the sky overhead.
Until recently we’ve known very little about Mercury, so join us on a journey to discover the secrets of the smallest planet in the Solar System 43 The planets Every planet is unique, but Mercury is a planet of paradoxes and extremes, and that’s just based on what we know so far. It’s the innermost planet, the smallest planet and has the most eccentric orbit. We’ve known about its existence since the third millennium BC, when the Sumerians wrote about it. But they thought that it was two separate planets – a morning star and an evening star – because that’s just about the only time you can see it due to its closeness to the Sun.
All About Space Book of the Solar System by Editor Jon White