The Earth's moon is thought to have formed when a Mars-sized object, called Theia, slammed into the early Earth 4.5 billion years ago, blasting out material that later coalesced in to a large satellite as depicted in this artist's illustration. A new analysis of lunar rocks adds new ...
How the Moon FormedA number of theories on how the Moon formed are explored here, including captured body, fission, formed together (condensation theory), planetesimal collisions (formed from asteroid-like bodies), anddoi:10.1007/978-3-319-22120-5_3Vincent S. Foster...
"In the early stages of the solar system, impacts were very abundant; therefore, it is more natural that several common impactors formed the moon, rather than one special one. Co-formation theory Moons can also form at the same time as their parent planet. Under such an explanation, ...
wherein some other large celestial body rammed into the planet. In fact, our own moon is presumed to be formed from such a collision that took place on Earth approximately 4.5 billion years ago!
How the Earth got its moon is a long debated question. The giant impact theory – which states that the moon formed from the a collision between the early Earth and a rocky body called Theia—has become the front runner among the explanations. But the de
The leading theory on the Moon’s formation holds that a large impactor about thesize of Mars, called Theia, collided with the young Earth, and in the process tore out a large amount of material which is said to have settled in an orbit around Earth. Eventually, it condensed to form the...
Moonstone is a variety of the feldspar-group mineral orthoclase. It’s composed of two feldspar minerals, orthoclase andalbite. At first, the two minerals are intermingled. Then, as the newly formed mineral cools, the intergrown orthoclase and albite separate into stacked, alternating layers. ...
“building the moon in this way takes many millions of years, implying that the moon’s formation overlapped with a considerable portion of earth’s growth.” however, he believes more understanding is needed of how the moonlets formed and merged efficiently in order to build the moon and to...
How did the moon form? How long does it take the moon to orbit Earth? How far is the moon from Earth? We tackle all of these questions (and more) in our guide.
but also for other pockmarked objects in the solar system, which are often dated by comparing their surfaces to similarly aged regions of the moon.对月球样本进行年代测定不仅可以为月球表 面提供更精确的年龄,还可以为太阳系中其他坑坑洼洼的 天体提供更精确的年龄,这些天体的年龄通常是通过对它 们的...