Astronomy Picture of the Day . How Much is That Comet in the Window? ... Explanation: The above true-color photo taken March 25th shows Comet Hyakutake passing below the stars of the Big Dipper . Many astronomy enthusiasts delight in helping people in their local community see the comet. ... One was with a little girl. ... I asked. ... Latest Comet Hyakutake images: JPL , Crni Vrh Observatory, Slovenia , Fayetteville Observer-Times , NASA's Night of the Comet . ... Little Planet Lovejoy . ...

... March 27, 1996 . How Much is That Comet in the Window? ... Explanation: The above true-color photo taken March 25th shows Comet Hyakutake passing below the stars of the Big Dipper . Many astronomy enthusiasts delight in helping people in their local community see the comet. ... One was with a little girl. ... Do you see the comet?" ... But one time a real business-person showed up and, possibly feeling particularly affluent, asked "How much is the comet?" ... Comet Hyakutake Finder Chart . ...

... The awsome spectacle of a brilliant comet, with its long ghostly tail streaming behind it, is a rare event. ... Only one other comet, Comet Halley, was seen so far from the Sun, giving scientists an opportunity to watch it as it slowly warmed up and sprouted a tail. ... Comets are the Rip Van Winkles of the solar system -- mini-worlds that have changed little during their 4.5-billion-year nap far from the Sun. ... Observing Comets . ... Once, comets inhabited the entire solar system. ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

Halley's Comet . Spacecraft that have visited Halley's Comet . ... Then in 1984 and 1985, five spacecraft from the USSR, Japan and Europe were launched to make a rendezvous with Halley's Comet in 1986. ... This image is a mosaic of 8 images taken by the Giotto spacecraft during the Halley encounter on March 13, 1986. ... Courtesy NASA/JPL) . ... Halley's Comets in 1986 . This image of Halley's Comets was taken during its 1986 appearance. ... Cylindrical Map of the Nucleus of Comet Halley . ...

... PPTA timeline . ... List of projects . ... However, our time series are not equally sampled, so classical spectrum analysis cannot be applied immediately. ... Normally when analysing time series with very steep spectra one would use a "prewhitening" technique and perhaps a low sidelobe spectral window (e.g. the Hanning window). ... The idea is to separate the steep and flatter spectrum components so they can be analysed separately. ... The upper panel has raw data, interpolated data and red...

... CV & PUBLICATIONS . ... FACEBOOK PAGE . ... These are my RSAA pages, with the usual collection of bits and pieces. I started out on a course towards a career in astronomy many years ago when I was 9, when I first looked at Betelgeuse through a homemade telescope made from spectacle lenses and a cardboard tube. ... After my BSc (Hons) in physics, instead of astronomy, I decided to head off into upper atmosphere physics. ... See publications page for details.) ...

... Solar System . ... Sun . ... Comets . ... Some get thrown out of the solar system forever, whereas others end up on yet smaller orbits, visiting the inner solar system fairly frequently - such as comet Halley. ... When a comet moves into the inner solar system, this is heated by the Sun, and the ices turn into gas which forms the head or coma of the comet, which may be hundreds of thousands of kilometres across and visible from Earth. The most striking part of many active comets is the tail . ...

... Many scientific institutions maintain bibliographies of articles published by their scientists and monitor references made to these publications; these figures are often used to evaluate the effectiveness of the institution. ... a) Identification of papers that are based, at least partly, on new data Publications based on observations can be subdivided into two groups: those presenting new, previously unreported data, and those that make use of already published data. ... Published by . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Posted on March 28, 2014 | No Comments Asteroids, chunks of rock and metal orbiting the Sun, were once considered ?vermin of the skies? by astronomers. ... Continue Reading.. ... Posted on February 27, 2014 | ... Posted on January 21, 2014 | ... Posted on December 17, 2013 | ... 3 Comments With only two planets in our solar system without moons (Mercury and Venus) our curiosity is a little spoilt for choice. ...

Log windows display messages from all "actors" (instruments, the TCC, the hub...) and allow you to send commands. Controls along the top allow you to filter out unwanted garbage or highlight messages of particular interest. ... Regular Expressions . ... The entry field for "+ Actors" and "+ Commands" filtering accept space-separated regular expressions . ... If you plan to send many messages to a particular actor, you may select the actor from the menu next to the command entry field. ...

... no comet has been observed with an orbit that indicates that it came from interstellar space, . ... From this he proposed that comets reside in a vast cloud at the outer reaches of the solar system. ... Unfortunately, since the individual comets are so small and at such large distances, we have no direct evidence about the Oort Cloud. ... T he Kuiper Belt is a disk-shaped region past the orbit of Neptune roughly 30 to 100 AU from the Sun containing many small icy bodies. ... Small Bodies .. ...

Why are there different versions of CIMA? Which version of CIMA should I choose? ... There is no CIMA log in my project directory --- what happened? ... If You are a normal, happy observer, You should choose the CIMA version with the highest version number, since that version contains the latest improvements and bug fixes. ... This means that programs like the data quick-look display and various ALFA instrument displays all exist in several versions just like the CIMA observing session itself. ...

... Most Important Journals . Less Popular Astronomical Journals . Physics . Space, Selectial mechanics, .. Russian Journals . ... Astrophysics & Astronomy . ... Astronomical Journal . ... New Astronomy . ... Publications of the Astronomical Society of the Pacific . ... STScI News . Space Telescope Insitute Newsletter . ... Journal of Astronomical Data . ... Journal of High-Energy Physics (mirror in CERN ) [astro, grav, hi-energy .. ... Journal of Experimental and Theoretical Physics . ...

... Comet Hyakutake (Todd Lauer, KPNO) . The nucleus of Comet Halley . Comets are `dirty snowballs' - 1 to 10 km diameter lumps of ice (water-ice, methane-ice, CO 2 ice) and dust - which originate from the outer Solar System. ~2 million comets are thought to lie in the Kuiper belt (beyond Neptune's orbit) . as many as 10,000 billion (10 13 ) may reside in the Oort Cloud, distances A typical comet weighs ~100 billion tons and has a velocity of 1 to 10 km/sec relative to the Earth - . ...

... Bad Astronomy . ... Bitesize Astronomy . ... If you thought our tour of the solar system ended with Neptune and Pluto, you are setting your sights way too low. The planets of the solar system mark time relatively close to the Sun compared to interstellar space. Pluto orbits the Sun at an average distance 40 times that of the Earth, yet the nearest star (the Alpha Centauri system) to the solar system is a mind-numbing 260,000 times the distance of the Earth to the Sun. ... 2008 Phil Plait. ...

Cosmology, Religion & Kansas . ... Cosmology is the study of the origin, current state, and future of our Universe. ... My cosmology tutorial is an attempt to summarize these discoveries. ... These measurements of very small CMB temperature fluctuations over 1% of the sky with a beam size 40 times smaller than COBE's 7 o beam confirm earlier work by a group at Penn & Princeton and data from BOOMERanG's test flight, but provide 3 to 4 times more accuracy. ... Ned Wright's Home Page . ...

... Archives . ... ArXiv] 3rd week, Apr. ... Unusually, this week finds an astro-ph paper written by a statistics professor addressing the K-function to explore the mystery of the universe. [astro-ph:0804.3044] J.M. Loh . ... My memory of learning the 2 point correlation function from an undergraduate cosmology class is very vague but the basic idea of modeling this function gave me an epiphany during a spatial statistics class several years ago when the Ripley?s K-function was introduced. ...

... Previous: Astronomical Information Discovery and Access: Design and Implementation of the ADS Bibliographic Services . ... We use the NASA Astrophysics Data System database of astronomical abstracts in seven major astronomy journals to study trends in astronomical publication over the last twenty years. ... The sociology of astronomical publication has traditionally been performed by looking for publication trends using every paper published in a few selected journals within a few selected years. ...

... 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 . ...