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Astronomy 101: From the Sun and Moon to Wormholes and Warp by Carolyn Collins Petersen

By Carolyn Collins Petersen

Discover the curiosities of the cosmos during this attractive ebook! Too frequently, textbooks move into extra aspect than readers take note of after they are looking to research a bit anything approximately astronomy. this can be the place Astronomy one hundred and one is available in. It takes you out to the celebrities and planets and galaxies and discusses a few of the newest mammoth Astronomy discoveries whereas providing the elemental proof approximately astronomy and space.
From the massive Bang and nebulae to the Milky manner and Sir Isaac Newton, this celestial primer is filled with countless numbers of interesting and exciting astronomy charts and images chosen to steer you thru the universe.Whether you're trying to get to the bottom of the secret at the back of black holes, or simply are looking to research extra approximately your favourite planets, Astronomy one hundred and one has loads of answers--even those you didn't be aware of you have been taking a look for.

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Extra info for Astronomy 101: From the Sun and Moon to Wormholes and Warp Drive, Key Theories, Discoveries, and Facts about the Universe

Example text

Even Mercury shows some scars from its continuous battle with the solar wind – craters oddly depleted in fine dusty debris. Imagine, then, a planet orbiting its Sun-like star at less than 1/10th the Sun-Mercury distance. Radiation would be 100 times as intense and the effect on the planet correspondingly greater. Cannonballs should be detectable through the Radial Velocity and Transit methods. Astronomers will look for any massive planetary body whose size indicates a high density. Expect the announcement of their discovery soon.

The planetary systems of red dwarfs more closely resemble Jupiter and its Galilean satellites, than they do our Solar System. Planets tightly circumnavigate their diminutive star in small, fast orbits. These are Solar Systems in miniature. The Effects of Neighboring Stars However, the formation of planets around these stars is a tricky business. It isn’t that the underlying physics is different. Instead the low mass of the disc makes it highly vulnerable to assault from other, swifter moving stars.

In (a), a massive hot Jupiter is irradiated by its star so strongly that the hydrogen- and helium-rich outer layers are boiled off, leaving the massive, rocky core. WASP-7b may be an example. Planets HD 209458b and HD 14902b would represent intermediaries in this process. In (b), two white dwarf stars orbit a common center of gravity, and the smaller but more massive one strips material from its helium-rich companion. This eventually leaves a helium-rich and planet-size mass companion in a fairly tight orbit around the white dwarf star.

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