| 词汇 | example_english_planet |
| 释义 | Examples of planetThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The duration of this phase is poorly understood, but during this time the terrestrial planets were not isolated. To the contrary, those on other planets have only been able to eke out a decent living by dint of incredibly hard work. In most cases, those planets follow orbits with significant eccentricity, leading to substantial seasonal temperature excursions. In most cases, those planets follow orbits with significant eccentricity, leading to substantial temperature excursions. Although he does not favour panspermia, he believes that life can spread between neighbouring planets via rocky ejecta (transpermia). The indication is that the microorganisms in these samples from both planets died during the latter part of first injection cycles. The asteroids, meteoroids and apparently all comets originated in the explosion of planets (or moons). They would be objects of outstanding size, a new family of giant comets or small planets, in a remote part of the solar system. The third chapter on the search for extrasolar planets discusses the different search methods and includes a section on circumstellar disk observations. If orbital stability of terrestrial planets is warranted within a certain distance from the star, studies of habitability are motivated. Plausibly even the tiniest change in the laws of nature or in the initial conditions would causally entail that stars and planets could never form. The project mission was to locate intelligent signals coming from hypothetical planets orbiting the stars. They do not promise inoculation against cancer or trips to other planets. In reality, all three might play a role in determining which planets will explode and when. The third planetary explosion mechanism holds the potential for an indefinitely large reservoir of energy for exploding even massive planets and stars. Similar solutions trapped in asteroids during aqueous alteration, and in meteorites on aqueous planets, can form complex biomolecules, including vesicle-forming membranes. Extreme salinity levels feature biota dependent upon "abnormal" conditions, which may represent forms of life that could possibly inhabit extraterrestrial planets. On the other hand, the inclination of the orb of each of the inferior planets to the ecliptic is variable. How would we detect the presence of simple life forms on other planets in our solar system or intelligent life elsewhere in our galaxy. Evidence for photosynthetic activity within sulphate crystals is therefore interesting as a habitat that could be widespread on other planets. Collisions between dust particles created increasingly larger objects ultimately leading to the planets. The likelihood is significantly increased for planets with a very high percentage of ocean surface (' water worlds '). The distance between these planets and the central star is a key parameter for the appearance of life. Derived core masses and observed short lifetimes of protoplanetary disks strongly constrain conditions for forming gas giant planets. The requirements for plate tectonics of water and mass are also independently requirements for habitable planets. Impacts by comets and asteroids with rocky planets are known to displace large masses of material. The bishop offers no specific astronomical explanation for the longitudinal motions of the planets. Four cometary belts associated with the orbits of the ginat planets : a new view of the outer solar system's structure emerges from numerical simulations. The matrix has had a gentle thermal history and is believed to be the (relatively unprocessed) original dust from which the planets formed. The worlds of doctor and patient are separate, busy, noisy planets. Outside the solar system there are millions of planets. She read about the moon and the different planets this week. Proponents of gravity then admitted that other considerations such as distance (in the case of planets) and air resistance have to be taken into consideration. Subsurface environments may be more common on rocky, terrestrial and icy planets than we have thought in the past. Simulations have shown that it will be possible to extract global information on the atmospheres of planets from such light curves. More realistically, the nebula would be evolving under the influence of internal viscous forces and the tidal forces of embedded giant planets. With a new sample of bright, well-characterized planets, there is an extensive range of future investigations that we will undertake. However, we predict that these planets will form from original inner disc material that has been well mixed with volatile-rich material from beyond the snowline. Transiting planets are valuable because their true physical parameters can be measured unambiguously, leading to improved constraints on models of planetary formation and evolution. A large amount of spectral data from planets, satellites and comets have been collected via remote telescopic observations and space missions. Currently, we do not have sufficiently sensitive techniques to detect planets with such small masses, except in rare circumstances. The migration of planets is one such problematic process. Rocky planetesimals formed in the inner zone of this disc, eventually growing into terrestrial planets. Our simulations based on this model have been successful in explaining many features of the giant planets. Moreover, the mass distribution of the planets can be accounted for in this model. Resolved imaging of extra-solar planets with future 10-100 km optical interferometric arrays. Such objects might orbit their stars either as isolated planets or moons to giant planets. The planets were born with a finite inventory of nuclear, thermal and chemical energy, which is gradually translated to heat. The extent of the giant planet's orbit, from apastron (furthest from the star) to periastron (closest to the star), is marked. Chapter 1 introduces the solar system and its planets and their formation. Chapter 11 describes the theory of extrasolar planets and their incidence. Chapter 7 discusses the possibility of biological habitats on other planets of our solar system, and even extrasolar planets. Such planets are expected to occupy the outer regions of their habitable zones where stellar flux and effective temperatures are lower. Contrary to initial expectation, none of our simulated planets exhibited permanent ice sheets near the equator at high obliquity. Could our planets support more advanced life at high obliquity ? There are over 100 extrasolar planets that have been discovered and new ones are continually added to this list. The book begins by reviewing the evidence for organic material in space and the availability of habitable planets. A more exciting biotic refuge would be in impact ejecta exchanged between planets. Also, they move in directions opposite to the planets as often as in directions consistent with the planets. A multiplying factor of 1.05, on the other hand, would lead to the inoculation of only 17 000 planets. They arrive from all directions on the sky, with no tendency to be concentrated towards the plane of the planets. Could we search for primitive life on extrasolar planets in the near future ? A reasonable assumption would that if only half the stars have planets, the search time will be reduced by roughly a factor of two. In both cases of the evolution of stars, heavy elements may be recycled to form new stars and terrestrial planets. If any are found, follow-up observations on other instruments will be used to search for terrestrial, potentially habitable, planets and moons. Nature simply is not that orderly and no two planets within the solar family are alike. Examples are the interior of planets, giant planets and stars or even compact astrophysical objects. As the program's name indicates, discovery starts from data: two rows of measurements - for a planet's distance and its period, respectively. Second, it is immediately clear how the belief about the planets might be shown to be false. There are nine planets traveling around the sun. The mating of planets is a delicate business. What constraints do the more certain requirements of mass and water impose on the distribution of planets with plate tectonics ? There are likely to be applications in studying gas giant planets too. Accordingly, evolution of efficient catalysts may represent an essential prerequisite for the origin of life on terrestrial planets. In turn, these events provide new raw material for subsequent generations of star formation, which leads to the formation of planets. However, a more directly applicable quest is the search for habitable planets. Finally, the current situation with respect to the physical characteristics of all planets showing transits is reviewed. In addition to that, the occurrence of coronal mass ejections that influence the particle environment of early planets has to be taken into account. We present results from simulations of late stage planetary accretion, focusing on the delivery of volatiles (primarily water) to the terrestrial planets. In any case, the molecules formed in the circumstellar environment are the same as those incorporated in comets and later delivered to planets by bombardment. We show that close-in extrasolar planets in the habitable zone of low-mass stars are synchronously rotating with their host star because of the tidal interaction. We then consider microlensing from planets or other bodies in orbit about the target star. They show that terrestrial-mass planets also do not produce any gravitational lensing amplifications. Collisions between asteroids containing such solutions during aqueous alteration can disperse microorganisms in solar nebulae and transport them to planets and to other solar systems. Other lessons are devoted to lunar motion, meteor showers, and the sky motions of the planets. The possibility of earthlike planets was considered, and he envisaged illustrious extraterrestrials close to the sun. The trajectories of the planet's diurnal motion therefore lie between these two circles. Then he took account of the finite size of the planets and treated them as spheres. Because the sun's rotation drove the planets around, the whole system would have come to a gentle halt for the duration of the miracle. If we can survive the next hundred years or so, we will have spread to other planets and possibly to other stars. Therefore, interstellar panspermia events are related to the average density of stellar systems containing habitable planets. Owing to migration, such planets should be found at any distance between their formation site and the star. The observed constraints imply that either planets form very rapidly, or that planetary systems will be relatively rare. Here we discuss two particular techniques that could discover earth-sized bodies in the same systems as the transiting planets. Only a few decades later such planets are being observed by a variety of means. Here, a planetary system consisting of one star and two identical-mass planets in circular but mutually inclined orbits is considered. There may well be great pressure from the public to develop a mechanism to find evidence for intelligent life on these planets. They then decide what classes of stars they think astronomers should focus on in the search for planets that might have life. During the dissipation of heat the planets have been differentiated into heterogeneous bodies composed of chemically distinct compartments. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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