Michael D. Lemonick
Far beyond the Kuiper Belt lies the hypothetical Oort Cloud, a spherical shell of icy objects believed to surround the solar system at distances up to100,000 AU. Though we've never directly observed it, the Oort Cloud is thought to be the source of long-period comets that take thousands o...
Far beyond the Kuiper Belt lies the hypothetical Oort Cloud, a spherical shell of icy objects believed to surround the solar system at distances up to100,000 AU. Though we've never directly observed it, the Oort Cloud is thought to be the source of long-period comets that take thousands o...
Even though there are only 8 official planets in the solar system, it can be tricky to remember them all in order from the Sun. A popular technique to use a mnemonic, which can be any sentence you want using the first letter of each planet. The letters for each word in the sentence ...
The main asteroid belt betweenMarsand Jupiter also divides our solar system into the inner and outer solar system. Here's a bit about each of the eightplanets, in orderof their distance from the sun. Terrestrial Planets The inner solar system consists of four rocky planets: Mercury, Venus, ...
A选项,比较对象正确，remnants of the Solar System's formation是插入语，修饰small bodies，正确，但句...
Compared to the major planets in the Solar System, small icy bodies have experienced much less thermal evolution and their physical properties are well preserved. The Kuiper Belt objects (KBOs) are numerous small icy bodies beyond Neptune, which are thought to be the most primitive remnants from...
et al. PRAIA - platform for reduction of astronomical images automatically. In Proc. Gaia Follow-up Network for the Solar System Objects: Gaia FUN-SSO Workshop Proceedings (eds Tanga, P. & Thuillot, W.) 85–88 (2011). Gomes-Júnior, A. R. et al. SORA: stellar occultation reduction ...
If the solar system was in a more compact configuration during the flyby, the constraints would relax. Next, we retained only flybys that produce a cold Kuiper belt population and Sedna-like objects in suitable regions of the parameter space. Only a small subset clustering around perturber ...
According to traditional ideas about the formation of the Solar System starting from a protoplanetary disk of gas and dust, a well-defined distribution of planets and minor bodies is expected: (a) volatile-poor rocky bodies (terrestrial planets and asteroids) in the inner part of the Solar Syst...