Astronomer Kidger has spent his career helping the general public understand the nature of the universe and astronomy. In "Astronomical Enigmas," he offers answers to the questions he is asked most frequently.

An astronomer brings the mysteries of space down to earth in this accessible guide to cosmology, astrophysics, and the ageless wonder of the night sky. The universe is big. Really big. And it gets bigger every day. In Cosmological Enigmas, Mark Kidger weaves together history, science, and science fiction to consider questions about the bigness of space and the strange objects that lie trembling at the edge of infinity. What are quasars, blazars, and gamma-ray bursters? Could we ever travel to the stars? Can we really expect aliens to contact us? From the profound (what evidence do we have to support the big bang theory?) to the bizarre (can there be more than one universe and, if so, how many dimensions does it possess?) to the everyday-yet-profound (why is the sky dark at night?), Kidger explains not only what we know about the universe but how we came to know it. Reflecting on how stars shine and what may lie beyond the edge of the universe, Kidger takes us on the ultimate cosmic journey.

DigiCat presents to you this unique SF collection, designed and formatted to the highest digital standards and adjusted for readability on all devices. E. M. Forster: The Machine Stops Richard Jefferies: After London Richard Stockham: Perchance to Dream Irving E. Cox: The Guardians Philip F. Nowlan: Armageddon–2419 A.D... George Griffith: The Angel of the Revolution... Percy Greg: Across the Zodiac David Lindsay: A Voyage to Arcturus Edward E. Hale: The Brick Moon Stanley G. Weinbaum: A Martian Odyssey... Abraham Merritt The Moon Pool... Edgar Wallace: The Green Rust... H. Beam Piper: Terro-Human Future History... Garrett P. Serviss: The Sky Pirate... Philip K. Dick: Second Variety... Jules Verne: Journey to the Center of the Earth H. G. Wells: The Time Machine Edgar Allan Poe: A Descent into the Maelstrom... Mary Shelley: Frankenstein... Edwin A. Abbott: Flatland Jack London: Iron Heel... R. L. Stevenson: Dr Jekyll and Mr Hyde George MacDonald: Lilith H. Rider Haggard: King Solomon's Mines She William H. Hodgson: The Night Land... Edward Bellamy: Looking Backward... Mark Twain: A Connecticut Yankee in King Arthur's Court Arthur Conan Doyle: The Lost World... Edgar Rice Burroughs Pellucidar Series Caspak Series Francis Bacon: New Atlantis C. J. Cutcliffe Hyne: The Lost Continent Margaret Cavendish: The Blazing World Jonathan Swift: Gulliver's Travels William Morris: News from Nowhere Samuel Butler: Erewhon Edward Bulwer-Lytton: The Coming Race James F. Cooper: The Monikins Charlotte P. Gilman: Herland Ayn Rand: Anthem Owen Gregory: Meccania the Su...

This meticulously edited Sci-Fi Collection is formatted for your eReader with a functional and detailed table of contents: Jules Verne: From the Earth to the Moon Around the Moon Off on a Comet H. G. Wells: The War of the Worlds Percy Greg: Across the Zodiac Gustavus W. Pope: Journey to Mars Journey to Venus David Lindsay: A Voyage to Arcturus Edward Everett Hale: The Brick Moon Stanley G. Weinbaum: A Martian Odyssey Valley of Dreams H. Beam Piper: The Terro-Human Future History Series: Uller Uprising Four-Day Planet The Cosmic Computer Space Viking The Return Omnilingual The Edge of the Knife The Keeper Graveyard of Dreams Ministry of Disturbance Oomphel in the Sky A Slave is a Slave Naudsonce Little Fuzzy Philip K. Dick: Second Variety The Variable Man Adjustment Team The Hanging Stranger The Eyes Have It The Skull Mr. Spaceship E. E. "Doc" Smith: Triplanetary First Lensman Galactic Patrol Second Stage Lensmen The Vortex Blaster or, Masters of the Vortex The Skylark of Space Skylark Three Spacehounds of IPC The Galaxy Primes Subspace Survivors Imperial Stars Masters of Space Murray Leinster: Murder Madness The Wailing Asteroid The Forgotten Planet Creatures of the Abyss Operation Terror The Pirates of Ersatz The Fifth-Dimension Catapult The Fifth-Dimension Tube (Sequel) Fritz Leiber: The Big Time The Creature from Cleveland Depths The Night of the Long Knives A Hitch in Space A Pail of Air The Moon is Green Richard Stockham: Perchance to Dream Irving E. Cox: The Guardians Frederik Pohl: Search the Sky Edwin Lester Arnold: Gulliver of Mars John Jacob Astor: A Journey to Other Worlds