Which idea is presented in both "our solar system: in depth" and "planets of our solar system"?

The common idea presented in both ‘our solar system: In-Depth’ & ‘Our Solar System’ is our solar system in detail.

Explanation :

Both of them talk about the solar system, the sun, and its planets, their constituents, sequence of the location of the planets in reference to the sun, their formation and significance.  

Besides the solar system, the former also talks about the Milky Way, its formation, the explosion of two supernovas that led to the formation of solar systems, and other constituents of the Milky Way - a spiral mass and our galaxy, one among many others in the big universe.

It also gives a reason behind the location of the first four planets near the sun and the gaseous and icy masses away from the sun.  

It also talks about the other masses that are there in the Milky Way like the asteroids and comets.

now, of course, the quality and the seasonability of these winter dreams varied, but the stuff of them remained.   they persuaded dexter several years later to pass up a business course at the state university—his father, prospering now, would have paid his way—for the precarious advantage of attending an older and more famous university in the east, where he was bothered by his scanty funds. but do not get the impression, because his winter dreams happened to be concerned at first with musings on the rich, that there was anything merely snobbish in the boy. he wanted not association with glittering things and glittering people—he wanted the glittering things themselves. often he reached out for the best without knowing why he wanted it—and sometimes he ran up against the mysterious denials and prohibitions in which life indulges.

there you go thats what we are missing