Encyclopedia of the Solar System 2nd ed

20 Encyclopedia of the Solar System FIGURE 9 A suspected cometary interplanetary dust particle. The IDP is a highly porous, appa ...

The Solar System and Its Place in the Galaxy 21 FIGURE 11 Artist’s concept of the major boundaries predicted for the heliosphere ...

22 Encyclopedia of the Solar System 4. The Origin of the Solar System Our knowledge of the origin of the Sun and the planetary s ...

The Solar System and Its Place in the Galaxy 23 FIGURE 12 Artist’s concept of the accretion disk in the solar nebula, showing du ...

24 Encyclopedia of the Solar System FIGURE 13 An image of the entire sky at infrared wavelengths, constructed from ground-based ...

The Solar System and Its Place in the Galaxy 25 FIGURE 15 The spiral structure of the Milky Way galaxy as inferred from the posi ...

26 Encyclopedia of the Solar System the galactic plane. Younger, more massive stars have lower mean velocities and thus smaller ...

The Solar System and Its Place in the Galaxy 27 FIGURE 16 A 3-dimensional representation of the stars in the solar neighborhood. ...

28 Encyclopedia of the Solar System enough to ignite helium burning in the core. During this time, hydrogen burning continues in ...

100-C 25-C 50-C 75-C C+M 50-C+M C+Y 50-C+Y M+Y 50-M+Y 100-M 25-M 50-M 75-M 100-Y 25-Y 50-Y 75-Y 100-K 25-K 25-19-19 50-K50-40-40 ...

30 Encyclopedia of the Solar System up a new window to the information stored in such grains. 4.The development of multiple coll ...

The Origin of the Solar System 31 FIGURE 2 The circumstellar disk surrounding HR 4796A as revealed by interferometry measurement ...

32 Encyclopedia of the Solar System while a significant fraction of the gas goes into orbit about the star forming a disk that i ...

The Origin of the Solar System 33 important effect. Protoplanetary disks are thought to be flared, so that their vertical thickn ...

34 Encyclopedia of the Solar System been similar to that of the Sun today. The challenge is there- fore to explain how it is pos ...

The Origin of the Solar System 35 FIGURE 8 The current best estimates for the timescales over which very early inner solar syste ...

36 Encyclopedia of the Solar System FIGURE 10 Oxygen isotopic composition of various bodies in the solar system. The x and y axe ...

The Origin of the Solar System 37 FIGURE 12 The pallasite Esquel is a mixture of silicate (olivine) and iron metal that may have ...

38 Encyclopedia of the Solar System FIGURE 13 The estimated composition of the silicate portion of the Earth as a function of th ...

The Origin of the Solar System 39 FIGURE 14 Most solar system nuclides heavier than hydrogen and helium were produced in stars o ...