Discover the cosmos! ... December 1, 1995 . 51 Pegasi: A New Planet Discovered . ... Humanity took one step closer to answering these questions in October 1995 when it was announced that the star 51 Pegasi harbors at least one planet. In the above picture of 51 Peg the planet is not visible - it can only be detected by noticing small changes in the star's motion. ... In the above picture the lines centered on 51 Peg are caused by the telescope itself and are not related to the star or planet. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . Planets . ... December . ... By admin February 15, 2011 Posted in: Planets . Eris with its small moon Dysomnia are portrayed in this artist's impression which also includes Arcturus, Antares and the Zodiacal Light around the Sun. ... On August 24 2006, it happened: Pluto the ninth planet in our Solar System, was relegated, demoted, downgraded, basically was no longer classed as a planet. ... Posted December 4, 2013 at 11:47 AM . ...

Astronomy Picture of the Day . Unusual Hollows Discovered on Planet Mercury . ... 27.03.2012 . ... Credit Copyright: NASA / JHU APL / CIW Explanation: What are those unusual features on planet Mercury? ... The rounded depressions appear different than impact craters and nothing like them has been noted on Earth's Moon or anywhere else in the Solar System . ... March 2012 . ... Publications with keywords: Mercury . Publications with words: Mercury . ... MESSENGER s Last Day on Mercury . ...

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. December 17, 1996 . Mariner's Mercury . ... Explanation: Mercury, the closest planet to the Sun, remains the most mysterious of the Solar System's inner planets. ... The only spacecraft to explore Mercury close-up was Mariner 10 which executed 3 flybys of Mercury in 1974 and 1975, surveying approximately 45 percent of its surface. ...

. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

... Galileo Probe . The Galileo spacecraft was designed to study Jupiter's atmosphere, satellites, and surrounding magnetosphere for two years. ... From there, Galileo will spend more than five years traveling to Jupiter, where it will become the first spacecraft to make direct measurements from an instrumented probe within Jupiter's atmosphere. ... This image, taken by the Hubble Space Telescope, shows the predicted site at which the Galileo Probe will enter Jupiter's atmosphere on December 7, 1995. ...

Armagh Observatory, 24 July 2000: . The Minor Planet Center at the Smithsonian Astrophysical Observatory, Cambridge, Massachusetts, USA, has announced the discovery of a new moon of Jupiter, bringing to 17 the number of known satellites orbiting the giant planet. ... At that time, Jupiter was about 370 million miles from Earth, just about as close as it ever gets, and therefore a good time to search for any faint satellites. ... Last Revised: 10th August 2000 . ...

... Asteroseismology of Extrasolar Planet Host Stars . ... GO 11945: Asteroseismology of Extrasolar Planet Host Stars . ... Asteroseismology uses those pulsations to study the internal structure of stars. ... Detecting such variations require extemely high signal-to-noise; nonetheless, observations have been extended to a handful of other stars. ... Past weeks: . Cycle 14 observations (from March 13 2006 to June 30 2006) . Cycle 15 observations (from July 1 2006) . ...