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  • Astronomy,  Stargazing

    Monthly Stargazing Calendar for September 2011

    September 3, 2011 /

    This month you can witness a supernova with just binoculars or a small telescope. The supernova is called SN 2011fe and has been discovered by astronomers on August 24 within hours of its explosion. It is located within the Messier 101 galaxy 23 million light-years away in the constellation of Ursa Major.

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  • Astronomy

    Astronomy Picture of the Week – Supernova Bubble Resembling Holiday Ornament

    February 24, 2011 /

    This image was made by combining data from two of NASA’s Great Observatories: the Hubble Space Telescope and the Chandra X-ray Observatory. The supernova remnant, cataloged as SNR 0509-67.5, is the result of a type Ia supernova. It is located in the Large Magellanic Cloud (LMC), a small galaxy about 160,000 light-years from Earth. The bubble-shaped shroud of gas is 23 light-years across and is expanding at more than 5,000 kilometers per second. Image Credit: NASA, ESA, CXC, SAO, the Hubble Heritage Team (STScI/AURA), and J. Hughes (Rutgers University)

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  • Astronomy

    Astronomy Picture of the Week – The Cat’s Eye Nebula

    February 11, 2011 /

    This detailed view of the so-called Cat’s Eye Nebula was taken by NASA’s Hubble Space Telescope. The nebula, formally cataloged as NGC 6543, was one of the first planetary nebulae to be discovered and is one of the most complex. Observations suggest the star ejected its mass in a series of pulses at 1,500-year intervals. This created dust shells, each of which contain as much mass as all of the planets in our solar system combined. These concentric shells make a layered, onion-skin structure around the dying star. Image Credit: NASA, ESA, HEIC, and The Hubble Heritage Team (STScI/AURA)

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    Background Cosmic Radiation image courtesy of NASA.

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  • Astronomy

    Astronomy Picture of the Week – The Colorful Demise of a Sun-Like Star

    January 19, 2011 /

    This image, taken by the Hubble Space Telescope, shows the colorful demise of a Sun-like star. The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star’s remaining core. Ultraviolet light from the dying star makes the material glow. The burned-out star, called a white dwarf, is the white dot in the center. It is one of the hottest known white dwarfs, with a surface temperature of nearly 200,000 degrees Celsius. The nebula is called NGC 2440 and lies about 4,000 light-years from Earth in the direction of the constellation Puppis. Image credit: NASA, ESA, and K. Noll (STScI)

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    September 1, 2022
  • Astronomy

    Astronomy Picture of the Week – Helix Nebula

    January 5, 2011 /

    This eerie picture captured by the Spitzer Space Telescope shows the Helix Nebula, also known as NGC 7293. It is located 700 light-years away in the constellation of Aquarius. The two light-year diameter shroud of dust and gas around a central white dwarf is the result of the final stages in the evolution of a sun-like star. Dust particles are what makes this cosmic eye look red. Image Credit & Copyright: NASA, JPL-Caltech, Kate Su (Steward Obs., U. Arizona), et al.

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  • Astronomy

    Fireworks Galaxy & Moon + ISS alignment

    January 1, 2011 /

    🙂 I hope you all had lots of fun yesterday while celebrating the coming of 2011. Apparently humans weren’t the only ones playing with fireworks… Here is a picture of some cosmic fireworks. This galaxy was nicknamed the “Fireworks Galaxy” for good reason. Over the last century, at least nine supernovae were discovered in that galaxy. By comparison, the average rate for supernovae in the Milky Way is about 1 per century. A supernova can be brighter than whole galaxies for some time after the explosion. That’s some fireworks! This beautiful spiral galaxy, also known as NGC 6946, is located 10 million light-years away in the constellation of Cepheus. It…

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  • Astronomy

    Astronomy Picture of the Week – Witch’s Broom Nebula

    November 3, 2010 /

    This nebula known technically as NGC 6960 but nicknamed the “Witch’s Broom Nebula” is an expanding cloud of debris that gains its colors by sweeping up and exciting existing nearby gas. The nebula was created by a supernova explosion about ten thousand years ago. It is located about 1400 light-years away towards the constellation of Cygnus. Credit & Copyright: Adam Block, Mount Lemmon SkyCenter, Univ. Arizona.

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  • Astronomy,  Physics

    A Pulsar With Planets

    August 21, 2010 /

    A pulsar is probably the deadliest object in the Universe. Despite their beauty, you wouldn’t want to get close to one of them! They are a type of neutron star that emits a highly focused beam of electromagnetic radiation from both magnetic poles. This radiation, deadly to any form of life, can only be visible when one of the two beams is turned to face towards the observer (which is hopefully not anywhere close). The radiation is so strong that it would disintegrate the molecular bonds holding together DNA strands, killing any life in the process. Pulsars rotate in an extremely regular period. It’s this rotation that makes them pulse,…

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    Monthly Stargazing Calendar for August 2012

    August 4, 2012
    Lyrids Meteor Shower Radiant Point. Image by Deborah Byrd from EarthSky.org.

    Monthly Stargazing Calendar for April 2013

    April 4, 2013
    Cosmology

    Cosmology – Never Ending Journey

    March 22, 2018
  • Astronomy

    Astronomy Picture of the Week – Distant Nebula

    April 11, 2010 /

    This nebula, designated as N 49 or DEM L 190, looks like puffs of smoke or sparks from a fireworks display. It is one of the most distant nebulae ever observed, located in the Large Magellanic Cloud, a dwarf galaxy orbiting the Milky Way. The nebula is the result of a large supernova, whose light should have reached Earth a few thousand years ago. Eventually, new stars will be formed inside the filaments of this huge nebula, or perhaps they already have, but their light has yet to reach us. Image Credit: NASA.

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    Comet ISON

    Monthly Stargazing Calendar for December 2013

    December 11, 2013

    Astronomy Picture of the Week – Sombrero Galaxy

    February 28, 2010
    Gravity Tractor NASA

    How to Defend Earth Against an Asteroid Strike

    March 31, 2009

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