PIX4637973: Galactic Center Region - Center of our galaxy (photo) / Bridgeman Images

PIX4637990: The Gamma ray sky - The Gamma ray sky - A map of the whole sky seen in gamma rays by the Fermi Gamma-Ray Space Telescope (FGST) satellite. All-sky image seen in gamma ray showing the glowing gas of the Milky Way, blinking pulsars, and a flaring galaxy billions of light-years away. The map combines 95 hours of the Fermi Gamma-Ray Space Telescope (FGST) instrument's “” first light”” observations. FGST has been launched on June 11 2008 / Bridgeman Images

FLO4637998: Peruvian bark tree or quinine tree, Cinchona officinalis. Handcoloured lithograph by Henry Sowerby from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

PIX4638020: Our Galaxy, The Lactee Way - Artist's View - Our Galaxy, the Milky Way. Artwork / Bridgeman Images

PIX4638074: Our Galaxy, The Lactee Way - Artist's View - Our Galaxy, the Milky Way. Artwork / Bridgeman Images

FLO4638086: Woody nightshade or bittersweet, Solanum dulcamara. Handcoloured lithograph by Henry Sowerby after an illustration by E.W. from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

PIX4638099: Our galaxy and the magellanian current-Illustration - Representation of the “” magellanic current”” created by the gravitational attraction of our galaxy on the two galaxies of the Magellan cloud / Bridgeman Images

FLO4638108: Roughbark lignum-vitae or guaiacwood, Guaiacum officinale. Endangered. Handcoloured illustration drawn and lithographed by Henry Sowerby from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

FLO4638127: Cherry laurel, Prunus laurocerasus (Lauro-cerasus). Handcoloured lithograph by Henry Sowerby after an illustration by A.W. from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

PIX4638130: Artist's view of our galaxy and the Great Magellan Cloud - Our galaxy, globular clusters and Large Magellanic cloud. Artwork / Bridgeman Images

FLO4638131: Marsh Labrador tea or wild rosemary, Rhododendron tomentosum or Ledum palustre. Handcoloured lithograph by Henry Sowerby from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

FLO4638151: Nutmeg and mace tree, Myristica fragrans (Nux moschata). Handcoloured lithograph by A.M. Traice after an illustration by A.W. from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

PIX4638160: Our Galaxy, the Lactee Way -Artist's View - Our Galaxy, the Lactee Way -Artist's View, Dixon, Don (b.1951) / Bridgeman Images

PIX4638162: Our Galaxy, the Lactee Way -Artist's View - Our Galaxy, the Lactee Way -Artist's View, Dixon, Don (b.1951) / Bridgeman Images

FLO4638163: Strychnine tree or poison nut, Strychnos nux-vomica. Handcoloured lithograph by A.M. Traice from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

PIX4638175: Our Galaxy, the Lactee Way -Artist's View - The Lactee Way -Illustratio / Bridgeman Images

FLO4638177: Opium poppy, Papaver somniferum. Handcoloured lithograph by Henry Sowerby from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

FLO4638191: St. Anthony's turnip or bulbous buttercup, Ranunculus bulbosus. Handcoloured lithograph by Henry Sowerby after an illustration by A.E. from Edward Hamilton's Flora Homeopathica, Bailliere, London, 1852. / Bridgeman Images

PIX4638193: Artist view of our galaxy, Dixon, Don (b.1951) / Bridgeman Images

PIX4640109: Space station in orbit - Illustration - Space station in orbit - Illustratio / Bridgeman Images

FLO4640167: Silvery marmoset, Mico argentatus. (Fair monkey, Simia sangoinus argentatus) Handcoloured copperplate engraving from “” The Naturalist's Pocket Magazine,”” Harrison, London, 1801. / Bridgeman Images

PIX4640201: Space elevator - Artist view - Space elevator - Artist view - Elevator project connects to a space station in geostationary orbit. A space elevator linked to a space station in gestationary orbit / Bridgeman Images

PIX4640208: Space elevator - Artist view - Space elevator - Artist view - Elevator project connects to a space station in geostationary orbit. A space elevator linked to a space station in gestationary orbit / Bridgeman Images

FLO4640214: Honeysuckle of New South Wales, Lonicera species. Illustration copied from George Edwards. Handcoloured copperplate engraving from “” The Naturalist's Pocket Magazine,”” Harrison, London, 1800. / Bridgeman Images

PIX4640225: Space Garage - Artist View - Space Garage - Artist view - Structure in orbit around the Earth to house spacecraft. A space garage that is parked in orbit a few miles from a space station. Habitat modules and an escape vehicle, makes the garage a space station in its own right. Also visible are the reflective solar dynamic power units which were under development at NASA Lewis (now NASA Glenn) but never made it into production, Bergeron, Joe / Bridgeman Images

PIX4640229: Columbus MTFF Space Station - Ecorche - The space station Columbus MTFF - Cross view of the European Space Station project, Columbus MTFF (Man - Tent Free Flyer), in 1991. Cutaway made in 1991 showing the european space station project, the Columbus MTFF (Man - Tent Free Flyer) module / Bridgeman Images

PIX4640253: Space Station Freedom - European Module - Ecorche - Space station Freedom - The european module - A cross-section view of the European module project, the Columbus Orbiting Facility (COF), attached to the permanent space station project Freedom. Cutaway made in 1990 showing the european module Columbus Orbiting Facility (COF) joined to the space station Freedom / Bridgeman Images

PIX4640264: Journey to the Nebula of Orion - Trip to the Orion nebula - Artist view - Vue artiste / Bridgeman Images

PIX4640278: Journey to the stars - Spaceship - Artist view - Vue d'artiste / Bridgeman Images

PIX4640294: Ionic propulsion spaceship - Artist view - A spaceship propelled by an ion propulsion - Artist vie / Bridgeman Images

PIX4640330: Spaceship - Artist's View - Spaceship - Artist vie / Bridgeman Images

PIX4640332: Artist view of an interstellar ship Ramjet - Boussard Interstellar Ramjet Engine - Artist view - Artist view of a spacecraft propelled with the help of the hydrogen collected in space; this hydrogen is captured at the front of the ship and then sent to a nuclear reactor or transformed to ensure propulsion. The Boussard Interstellar Ramjet engine concept uses interstellar hydrogen scooped up from its environment as the spacecraft passes by to provide propellant mass. The hydrogen is then ionized and then collected by an electromagnetic field. In this image, an onboard laser is used to heat the plasma, and the laser or electron beam is used to trigger fusion pulses thus creating propulsion / Bridgeman Images

FLO4640340: Garden or great tiger moth, Arctia caja. Illustration copied from Moses Harris. Handcoloured copperplate engraving from “” The Naturalist's Pocket Magazine,”” Harrison, London, 1799. / Bridgeman Images

FLO4640345: Spotted axis deer, Axis axis. Handcoloured copperplate engraving from “” The Naturalist's Pocket Magazine,”” Harrison, London, 1802. / Bridgeman Images

FLO4640358: Noah's ark shell, Arca noae. Illustration copied from Georg Knorr. Handcoloured copperplate engraving from “” The Naturalist's Pocket Magazine,”” Harrison, London, 1802. / Bridgeman Images

PIX4640370: Artist view of a spacecraft and a comet - A spacecraft approaching a comet - Artist view - Artist view of a spacecraft approaching a comet on Earth. Illustration made for the cover of Gregory Benford's novel “Dans l'ocean de la nuit” (in the ocean of night). A spacecraft approaches a comet that is on a collision course with earth, Dixon, Don (b.1951) / Bridgeman Images