(nb); gồm các tiểu hàng tinh nằm giữa quỹ đạo của sao Hỏa và sao Mộc (vi); 位于火星和木星轨道之间的区域 (zh-cn); regione contenente la maggior concentrazione di asteroidi del sistema solare (it); Aurinkokunnan osa (fi); the circumstellar disk (accumulation of matter) in an orbit between those of Mars and Jupiter (en); riggioni dû Sistema Sulari tra di l'òrbiti di Marti e Giovi ca cunteni na granni cuncintrazzioni di astiroidi (scn); oblast sluneční soustavy mezi drahami Marsu a Jupitera (cs); rhanbarth o'r system Solar, wedi'i leoli rhwng orbitau Mawrth a Iau (cy) cinturón principal, cinturon de asteroides, cinturon principal (es); ceinture principale d'astéroïdes, ceinture principale (fr); пас астэроідаў, астэроідны пояс (be-tarask); gerriko nagusia (eu); главный пояс астероидов, кольцо астероидов (ru); Hauptgürtel, Planetoidengürtel (de); cintura principal, cintura interna de asteroides (pt); an crios astaróideach (ga); 小行星带, 内层小行星轨道 (zh); メインベルト (ja); Cencha d'asteroïdes (oc); йолдызчалар билбавы (tt); 内层小行星轨道 (zh-cn); the asteroid belt (en); aszteroidaöv (hu); hlavní pás planetek (cs); asteroïdengordel (nl)the circumstellar disk (accumulation of matter) in an orbit between those of Mars and Jupiter A further extension is from the past of the existing asteroids to the possible future destruction of Earth or other planets and their rendering into new asteroids. Proto-planets in the process of formation and planetary rings may look like that, but the Sun's asteroid belt does not. First, a region of the sky was These first three steps do not constitute asteroid discovery: the observer has only found an apparition, which gets a The last step of discovery is to send the locations and time of observations to the There is increasing interest in identifying asteroids whose orbits cross Two events in later decades increased the alarm: the increasing acceptance of the All these considerations helped spur the launch of highly efficient surveys that consist of charge-coupled device (Traditionally, small bodies orbiting the Sun were classified as However, following the discovery of asteroids below ten meters in size, Rubin and Grossman's 2010 paper revised the previous definition of meteoroid to objects between 10 When found, asteroids were seen as a class of objects distinct from comets, and there was no unified term for the two until "small Solar System body" was coined in 2006. Their orbits are perturbed by the gravity of other bodies in the Solar System and by the Yarkovsky effect. (The asteroid belt in the In earlier works, asteroids provided grist for theories as to their origin – specifically, the theory that the asteroids are remnants of an exploded planet. Most asteroids orbit at 2 to 3 times the distance between Earth and the Sun. It is a small object in the Solar System that travels around the Sun. The asteroid belt region is also termed the main belt to distinguish it from other concentrations of minor planets within the Solar System, such as the Kuiper belt and scattered disc. Very few asteroids with a diameter larger than 100 meters have a rotation period smaller than 2.2 hours.The physical composition of asteroids is varied and in most cases poorly understood. The asteroid belt or main belt is a ring of small and large rocks and dust between the orbits of Mars and Jupiter.The biggest object in the asteroid belt is Ceres, a dwarf planet.The Kirkwood gaps separate the asteroid belt into several groups.. Very few asteroids with a diameter larger than 100 meters have a rotation period smaller than 2.2 hours.The physical composition of asteroids is varied and in most cases poorly understood. However, the asteroids came to be imagined as a vast accumulation of mineral wealth, accessible in conditions of minimal gravity, and supplementing Earth's presumably dwindling resources—though the value of such minerals would have to be very high indeed to make such enterprises economically viable.
In this article, the term "asteroid" refers to the minor planets of the inner Solar System, including those co-orbital with Millions of asteroids exist, many the shattered remnants of Asteroids are somewhat arbitrarily differentiated from The United Nations declared 30 June as International Asteroid discovery methods have dramatically improved over the past two centuries. Meteoroids are significantly smaller than asteroids, and range in size from small grains to one-meter-wide objects. “Asteroid Belt Like Ours Spotted Around Another Star”. The name "asteroid" means "like a star" in the ancient Greek language. And like reefs and rocks in the ocean, asteroids as navigation hazards can also be used by bold outlaws to avoid pursuit. Asteroids in this context provide to space travel stories a space equivalent of reefs and underwater rocks in the older genre of seafaring adventures stories. By 1855 there were two dozen asteroid symbols, which often occurred in multiple variants.The first close-up photographs of asteroid-like objects were taken in 1971, when the The first true asteroid to be photographed in close-up was Other asteroids briefly visited by spacecraft en route to other destinations include The Japan Aerospace Exploration Agency (JAXA) launched the In early 2013, NASA announced the planning stages of a mission to capture a near-Earth asteroid and move it into lunar orbit where it could possibly be visited by astronauts and later impacted into the Moon.It has been suggested that asteroids might be used as a source of materials that may be rare or exhausted on Earth (Location of Ceres (within asteroid belt) compared to other bodies of the Solar System
A theme related to that of the Fifth Planet is the generation of a new asteroid belt, via the demolition of a planet, sometimes the Earth. Asteroids play several potential roles in science fiction: as places human beings might colonize, resources for extracting minerals, hazards encountered by spacecraft traveling between two other points, and as a threat to life on Earth or other inhabited planets, dwarf planets, and natural satellites by potential impact. Asteroids play several potential roles in science fiction, most notably as places which human beings might colonize, as resources for extracting minerals, as a hazard encountered by spaceships traveling between two other points, and as a threat to life on Earth due to potential impacts.
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