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rickadam

AuroraMap | A live aurora forecast map with places to view the Northern Lights - 0 views

www.auroramap.co.uk

northern lights forecast map

shared by rickadam on 13 Mar 14 - No Cached
  • rickadam on 13 Mar 14
     
    A northern lights forecast map with current and historical Flickr images. Forecast is based on Kp index and Bz
The Ravine / Joseph Dunphy

APOD: 2008 November 17 - HR 8799: Discovery of a Multi planet Star System - 0 views

apod.nasa.gov/ap081117.html

science astronomy planets exoplanets

shared by The Ravine / Joseph Dunphy on 29 Mar 09 - Cached
  • The Ravine / Joseph Dunphy on 29 Mar 09
     
    Infrared photos of a few extrasolar planets. Don't expect much - you just see points of light - but they've been imaged in Infrared light.
Todd Suomela

ESO - ESO 24/09 - Astronomer's new guide to the galaxy: largest map of cold dust revealed - 0 views

www.eso.org/...pr-24-09.html

astronomy astrophysics galactic survey

shared by Todd Suomela on 03 Jul 09 - Cached
  • Todd Suomela on 03 Jul 09
     
    This new guide for astronomers, known as the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) shows the Milky Way in submillimetre-wavelength light (between infrared light and radio waves [1]). Images of the cosmos at these wavelengths are vital for studying the birthplaces of new stars and the structure of the crowded galactic core.
Todd Suomela

Reclaiming the Nighttime Sky - Environment and Energy - 0 views

blogs.tnr.com/...laiming-the-nighttime-sky.aspx

light-pollution night astronomy america

shared by Todd Suomela on 09 Mar 09 - Cached
  • Todd Suomela on 09 Mar 09
     
    On the International Dark Sky Association starting to lobby Washington D.C.
  • Todd Suomela on 09 Mar 09
     
    Will 2009 be the year the federal government finally takes light pollution seriously?
Kalyan Roy

The Dark Attractor: What's Pulling the Milky Way Towards It at 14-Million MPH? - 1 views

www.dailygalaxy.com/...towards-at-14-million-mph.html

Astronomy

shared by Kalyan Roy on 13 Nov 09 - Cached
  • A huge volume of space that includes the Milky Way and super-clusters of galaxies is flowing towards a mysterious, gigantic unseen mass named mass astronomers have dubbed "The Great Attractor," some 250 million light years from our Solar System.
  • The Great Attractor is a diffuse concentration of matter some 400 million light-years in size located around 250 million light-years away within the so-called "Centaurus Wall" of galaxies , about seven degrees off the plane of the Milky Way. X-ray observations with the ROSAT satellite then revealed that Abell 3627 is at the center of the Great Attractor. It lies in the so-called Zone of Avoidance, where the dust and stars of the Milky Way's disk obscures as much as a quarter of the Earth's visible sky.
Janos Haits

Welcome to the NASA Star and Exoplanet Database - 1 views

nsted.ipac.caltech.edu

nasa database Astronomy science universe planetary cosmology space

shared by Janos Haits on 23 Aug 11 - No Cached
  • Janos Haits on 23 Aug 11
     
    he NASA Star and Exoplanet Database (NStED) collects and serves public data to support the search for and characterization of extra-solar planets (exoplanets) and their host stars. The data include published light curves, images, spectra and parameters, and time-series data from surveys that aim to discover transiting exoplanets. All data are validated by the NStED science staff and traced to their sources. NStED is the U.S. data portal for the CoRoT mission.
Astro Biology

Know More about First Light At MARS - 0 views

www.astrobio.net/...first-light-mars

mars mission maven space station nasa news

shared by Astro Biology on 14 Oct 14 - No Cached
  • Astro Biology on 14 Oct 14
     
    Do you know how long does Mars mission take to start & sending back data once it's arrived at the red planet? Read more about Mars atmosphere, wavelength, MAVEN etc. only at Astrobiology Magazines.
  • Astro Biology on 14 Oct 14
     
    Do you know how long does Mars mission take to start & sending back data once it's arrived at the red planet? Read more about Mars atmosphere, wavelength, MAVEN etc. only at Astrobiology Magazines.
Todd Suomela

[astro-ph/0511440] Varying Constants - 0 views

arxiv.org/0511440

cosmology astronomy astrophysics physics paper

shared by Todd Suomela on 29 Jan 09 - Cached
  • Todd Suomela on 29 Jan 09
     
    We review properties of theories for the variation of the gravitation and fine structure 'constants'. We highlight some general features of the cosmological models that exist in these theories with reference to recent quasar data that are consistent with time-variation in the fine structure 'constant' since a redshift of 3.5. The behaviour of a simple class of varying-alpha cosmologies is outlined in the light of all the observational constraints.
Todd Suomela

Press Release: Two of the Milky Way's Spiral Arms Go Missing - 0 views

www.spitzer.caltech.edu/...release.shtml

astronomy astrophysics galactic observatory satellite spitzer-space-telescope

shared by Todd Suomela on 05 Jun 08 - Cached
  • Todd Suomela on 05 Jun 08
     
    Now, new images from NASA's Spitzer Space Telescope are shedding light on the true structure of the Milky Way, revealing that it has just two major arms of stars instead of the four it was previously thought to possess.
Todd Suomela

Space storm alert: 90 seconds from catastrophe - space - 23 March 2009 - New Scientist - 0 views

www.newscientist.com/...-seconds-from-catastrophe.html

astronomy solar catastrophe coronal-mass-ejection black-swan gloom-and-doom electricity electric-grid risk space-weather

shared by Todd Suomela on 27 Mar 09 - Cached
  • Todd Suomela on 27 Mar 09
     
    The most serious space weather event in history happened in 1859. It is known as the Carrington event, after the British amateur astronomer Richard Carrington, who was the first to note its cause: "two patches of intensely bright and white light" emanating from a large group of sunspots. The Carrington event comprised eight days of severe space weather.
Todd Suomela

Guest Post: Evalyn Gates on Cosmic Magnification (or - Invasion of the Giant Blue Space... - 0 views

blogs.discovermagazine.com/...f-the-giant-blue-space-amoebas

astronomy astrophysics gravity-lens physics science gravity methods

shared by Todd Suomela on 19 Jul 09 - Cached
  • This is not just a pretty picture, however – the image packs a lot of scientific information. The authors extract the mass distribution in the cluster (which has implications for cosmological models), measure the mass-to-light ratio of the bright galaxy in the center of the cluster, and use the magnifying power of the lens to search for even more distant galaxies. The basic idea is to construct a model of the lens, starting with the cluster galaxies and a dark matter halo; then refine the model to reproduce the multiple images that are seen. Using this refined model it’s possible to predict the location of additional images of a given source, and to identify regions of high magnification that can then be examined for multiple images of other sources. Any additional images that are found can be used to further refine the model and so on.
  • This galaxy has been lensed by the warp in spacetime created by the cluster. Light from the galaxy, which lies almost directly behind the center of the cluster but much farther away from us, travels along several curved paths through the cluster lens, producing multiple magnified images of the galaxy. The inset box shows a computer generated model of the unlensed source galaxy, enlarged by a factor of four so that the details, including the spiral arm structure, are visible. Without the lensing power of the cluster, we would see this galaxy as a single small blue smudge. In general, lensing will both magnify and distort (shear) images of a background source. This lens is fairly unique in that we see large but relatively intact images of the spiral galaxy, which implies that the mass distribution in the central region of the cluster must be nearly uniform.
Kalyan Roy

Image of the Day: A Cosmic Circle of Light - 0 views

www.dailygalaxy.com/...a-massive-circle-of-light.html

Astronomy

shared by Kalyan Roy on 11 Nov 09 - Cached
  • Astronomers generally believe that the giant bar, which is too faint to be seen in this image, funnels the gas to the inner ring, where massive stars are formed within numerous star clusters.
Sandra Flores

Comet Lovejoy visible in the night sky - 0 views

Observing Tip: Comet Lovejoy visible in the night skyLovejoy has developed over the past few weeks, far better than predicted - the chances of being able to see him in January with the naked eye, a...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Comet Lovejoy visible in the night sky - 0 views

Observing Tip: Comet Lovejoy visible in the night skyLovejoy has developed over the past few weeks, far better than predicted - the chances of being able to see him in January with the naked eye, a...

started by Sandra Flores on 09 Jan 15 no follow-up yet
Janos Haits

Blue Marble Navigator - 3 views

www.blue-marble.de

maps satellite science space planetary astronomy

shared by Janos Haits on 10 Feb 13 - Cached
  • Janos Haits on 10 Feb 13
     
    NASA's "Blue Marble" pictures of Earth show each month of the year 2004 to illustrate changes in snow cover and vegetation. Here, you can browse their maximum resolution of four pixels per km², as well as a slightly coarser night-lights map, enhanced by town names and national borders.
Janos Haits

models/research/astronet at master · tensorflow/models · GitHub - 1 views

github.com/...astronet

research github Astronomy science Space universe planetary cosmology exoplanets planet

shared by Janos Haits on 19 Mar 18 - No Cached
  • Janos Haits on 19 Mar 18
     
    "AstroNet: A Neural Network for Identifying Exoplanets in Light Curves"
hanz444

Einstein's Theory of General Relativity - 0 views

www.space.com/theory-general-relativity.html

astronomy science space universe planetary solar galactic astrophysics Physics

shared by hanz444 on 22 Sep 15 - No Cached
  • hanz444 on 22 Sep 15
     
    Einstein's theory of general relativity predicted that the space-time around Earth would be not only warped but also twisted by the planet's rotation. Gravity Probe B showed this to be correct.Credit: NASA In 1905, Albert Einstein determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers.
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