Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Top Ten Discoveries of the Phoenix Misson to Mars? by Suzanne Young . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

home publications > mercury . ... Astronomy Beat . ... Nearly four centuries ago, Galileo's simple observations of Earth's planetary sibling, Venus, buoyed the proponents of a Copernican universe. ... The Italian astronomer had settled into a new house in Florence and had begun to observe Venus, which in November 1610 would have appeared as an evening star, bright in the western sky after dusk. ... From these two observations, Galileo inferred that Venus must orbit closer to the Sun than does Earth. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ... This object, PSR J0437-4715, may be the closest known pulsar, and is several times closer than any other known millisecond pulsar. ...

Visual Discovery of SN 1996X in NGC 5061. ... It was not until the IAU Circular was issued that we found out there had been an independent amateur photographic discovery of this supernova by Kesao Takamizawa of Japan. ... Earlier in the week, 660 galaxies had been observed during two nights we had use of the 40 inch telescope at Siding Spring. ... The supernova in NGC 5061 was first seen with the smaller telescope about 10pm local time on Friday, April 12 (April 12.5 UT). ...

... 9857 5.00 5.27 5.14 0.03 19.6 10.3 10 2006 06 21 Jupiter Trojan 9881 1.38 3.30 2.34 0.41 8.1 15.9 9 2008 04 08 13060 4.53 5.82 5.18 0.12 22.9 10.3 9 2004 05 19 Jupiter Trojan 13551 1.45 3.60 2.52 0.43 5.3 16.1 8 2008 03 02 17640 1.50 3.14 2.32 0.35 25.4 14.0 9 2004 12 19 18514 1.35 3.78 2.57 0.47 24.9 15.9 7 2010 05 10 23480 4.77 5.66 5.22 0.09 22.5 11.4 9 2005 06 10 Jupiter Trojan 48438 4.95 5.28 5.11 0.03 31.4 10.2 10 2006 12 31 Jupiter ...

Large sunspots were occasionally seen far in the past without any instruments, when the sun was dimmed by thick haze, but not much was remembered of those observations. ... Sunspot Cycle (1850 - 1975) . One who was greatly influenced by Schwabe's discovery was an English gentleman of independent means, Richard Christopher Carrington , who devoted himself to the study of sunspots. ... Carrington had seen a flare, of the rare variety that is visible in white light (only about 50 are known). ...

The Discovery of the Galilean Satellites . ... Probably the most significent contribution that Galileo Galilei made to science was the discovery of the four satellites around Jupiter that are now named in his honor. Galileo first observed the moons of Jupiter on January 7, 1610 through a homemade telescope. He originally thought he saw three stars near Jupiter, strung out in a line through the planet. ... Galileo's Observations of Jupiter's Moons . ... Jupiter . ...

... Southern . ... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Discovery and characterisation of Pre Main Sequence stars in southern star forming regions . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... Using a robust method to identify Pre-Main Sequence (PMS) stars through their photometric excess in the Hн± band, we have recently studied the star formation history in several star burst clusters in the Galaxy, Small and Large Magellanic Clouds. ...

... Click on an object in the solar system or choose from the list at left to learn more . The Arecibo Observatory planetary radar is the world's most powerful instrument for post-discovery characterization and orbital refinement of near-Earth objects. ... The Solar System Studies group is a department of the Arecibo Ob