PIX4572673: Vue d'artiste d'une cepheide - Cepheid - artist view - Vue d'artiste d'une cepheide. Cepheides are very bright variable stars that serve as cosmic beacons to measure the distance of nearby galaxies. Their pulse period is measured and their absolute luminosite is calculated. By comparing the result to their apparent luminosite in the sky, they can be calculated accurately. A Cepheid variable star pulses in a regular period that is directly related to its intrinsic brightness, allowing astronomers to use such stars as “” standard candles”” to measure distances to other galaxies, Dixon, Don (b.1951) / Bridgeman Images
PIX4583359: Supernova and Planet - Artist's View - Supernova Explosion - Artist view - A planet devastee by the intense radiation emitted by the explosion of a star. Mountain ranges melt on the outer planet of a star that has gone supernova. Even before the wave of ejecta from the exploding star reaches the planet, the unimaginably intense radiation has turned the world's crust molten, Dixon, Don (b.1951) / Bridgeman Images
PIX4626297: Saturn seen from his satellite Japet - Saturn as seen from Iapetus - Artist's view of the surface of the satellite Japet and the planet Saturn eclipsing the Sun. Saturn as seen from Iapetus Saturn produces a “” diamond ring”” effect as it eclipses the sun in this perspective from the satellite Iapetus. Artist view, Dixon, Don (b.1951) / Bridgeman Images
PIX4623968: Neptune and its rings - Illustration - Neptune and its rings - Illustration - Neptune has a system of several rings; the farthest from Neptune is called Adams and contains the bows Liberte, Egalite, Fraternity and Courage. In this artist's view, the small satellites of Neptune are also represented; from the closest to the farthest from the planet, we find: Naiade, Thalassa, Despina, Galatee, Larissa and Protee, Dixon, Don (b.1951) / Bridgeman Images
PIX4613953: Active galaxies in collision - Artist view - Active galaxies collide - Artist view - Artist view of a quasar whose jet is powered by the material of a galaxy rentree in collision. Active galaxies collide, feeding matter to the central black holes that power quasars, Dixon, Don (b.1951) / Bridgeman Images
PIX4607482: Project Daedalus - Vue d'artiste - Daedalus project - Artist view - Daedalus was an interstellar space probe project written in the 1970s. The aim was to make a probe capable of examining the Barnard star system in order to study possible planets. A crewed starship based on the British Interplanetary Society's 1970's Daedalus design fires its nuclear pulse engine in interstellar space. The engine, capable of producing 0.01 gravity acceleration, boosts the ship to 10 percent the speed of light after ten years of thrust, Dixon, Don (b.1951) / Bridgeman Images
PIX4606088: Huygens probe lands on Titan. - Huygens probe lands on Titan. - Artist's view of the descent of the European probe Huygens on Titan. Huygens landed on the Titan satellite on 14 January 2005. The Cassini-Huygens probe was launched on 15 October 1997 and has been placed in orbit around Saturn since 1 July 200, Dixon, Don (b.1951) / Bridgeman Images
PIX4645711: Satellite HDST and Starshade - High Definition Space Telescope with starshade: High Definition Space Telescope (HDST) is an observation satellite project. Located at the point of Lagrange 2, this satellite equipped with a 12-metre mirror would offer images of the universe 24 times more accurate than those obtained by the Hubble space telescope. It could be accompanied by a blackout (starshade), places in space a long distance from it to block the light of a star in order to observe its exoplanets. The High Definition Space Telescope is almost twice the size of a tennis court. By using a football-field-sized shade to block the light from distant stars, the HDST could directly observe exoplanets;, Dixon, Don (b.1951) / Bridgeman Images
PIX4645492: Artist view showing the Hubble Space Telescope realising the Hubble Ultra Deep Field. - Artist view showing the Hubble Space Telescope realising the Hubble Ultra Deep Field. - Artist view showing the Hubble Space Telescope realising the Hubble Ultra Deep Field., Dixon, Don (b.1951) / Bridgeman Images
PIX4606083: Huygens probe lands on Titan. - Huygens probe lands on Titan. - Artist's view of the descent of the European probe Huygens on Titan. Huygens landed on the Titan satellite on 14 January 2005. The Cassini-Huygens probe was launched on 15 October 1997 and has been placed in orbit around Saturn since 1 July 200, Dixon, Don (b.1951) / Bridgeman Images