NOAO Home Page Image Archive
The last 5 images that have appeared on the NOAO Home Page.
August 27, 2015
Dark Energy Survey finds more celestial neighbors
Eight new dwarf galaxy “neighbors” of the Milky Way discovered in recent data from the Dark Energy Survey (DES). More than 20 such companions to our galaxy have been discovered this year, of which 17 were found in DES data. Dwarf satellite galaxies may provide valuable clues to the nature of dark matter and how galaxies like the Milky Way formed. The Dark Energy Survey is being carried out on the 4-m Blanco telescope at CTIO.
August 21, 2015
Astronomers find ‘teeny supermassive black hole’
Discovered in dwarf galaxy RGG118, the petite black hole, only 50,000 times the mass of the sun, is the smallest supermassive black hole to date. NOAO Hubble Fellow Amy Reines is a coauthor on the study.
August 09, 2015
Chilean Astronomical Site Becomes World’s First International Dark Sky Sanctuary
On Sunday, 9 August, 2015, at the International Astronomical Union meeting in Honolulu, Hawai’i, the International Dark-Sky Association announced that the site of the Associated Universities for Research in Astronomy (AURA) Observatory in the Elqui Valley of northern Chile will be recognized and designated as the first International Dark Sky Sanctuary in the world. The site will be known as the “Gabriela Mistral Dark Sky Sanctuary” after the famed Chilean poet.
Read more in NOAO Press Release 15-05.
July 27, 2015
Hiding in Plain Sight: Undergraduates Discover the Densest Galaxies Known
Using imaging data from a variety of telescopes as well as spectroscopy from the Goodman Spectrograph on the Southern Astrophysical Research Telescope (SOAR), two undergraduates at San José State University have discovered two galaxies that are the densest known. Similar to ordinary globular star clusters but a hundred to a thousand times brighter, the new systems have properties intermediate in size and luminosity between galaxies and star clusters.
Read more in NOAO Press Release 15-04.
July 09, 2015
NGC 2346 – A Cosmic Butterfly’s Delicate Wings
NOAO scientists, using the Gemini Observatory 8-meter telescope in Chile, have obtained the highest resolution image ever obtained for the planetary nebula NGC 2346. The new observations of this bipolar planetary nebula resolve details comparable in size to our own solar system. The team detected previously unresolved knots and filaments of molecular hydrogen gas - details that no other telescope on the ground or in space, not even the Hubble Space Telescope, has been able to resolve.
Read more in NOAO Press Release 15-03.
Link to all previous images .