Anne's Picture of the Day: Interacting Galaxies NGC 1531/32

Anne’s Picture of the Day: Interacting Galaxies NGC 1531/32

May 28, 2013 NGC 1531 and NGC 1532, interacting galaxies in Eridanus Image Credit & Copyright: Robert Gendler, Jan-Erik Ovaldsen, Allan Hornstrup, IDA; Image Processing: Robert Gendler (http://www.robgendlerastropics.com) NGC 1531 and NGC 1532 are a pair of interacting galaxies located about 55 million light-years away from Earth in the southern constellation of Eridanus (the River). [continue reading]

Anne's Picture of the Day: Planetary Nebula NGC 3242

Anne’s Picture of the Day: Planetary Nebula NGC 3242

May 27, 2013 NGC 3242, a planetary nebula in Hydra Image Credit: B. Balick (U. Washington) et al., WFPC2, HST, NASA NGC 3242 (also known as the Ghost of Jupiter) is a planetary nebula located some 1,400 light-years away from Earth in the constellation of Hydra (the Water snake). The inner ring stretches to around [continue reading]

Galaxies Grow by Funnels of Cold Gas

Galaxies Grow by Funnels of Cold Gas

  Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws.  Created with the help of supercomputers, this still from a simulation shows the formation of a massive galaxy during the first 2 billion years of the Universe. Hydrogen gas is [continue reading]

Anne's Picture of the Day: Dwarf Galaxy Henize 2-10

Anne’s Picture of the Day: Dwarf Galaxy Henize 2-10

May 26, 2013 Henize 2-10, a dwarf galaxy in Pyxis Image Credit: X-ray: (NASA/CXC/Virginia/A.Reines et al); Radio: (NRAO/AUI/NSF); Optical: (NASA/STScI) Henize 2-10 (also known as ESO 495- G 021) is an irregular shaped, compact blue dwarf galaxy of some 3,600 light-years across, located 34.24 million light-years away from Earth in the southern constellation of Pyxis [continue reading]

Anne's Picture of the Day: Planetary Nebula MWP1

Anne’s Picture of the Day: Planetary Nebula MWP1

May 25, 2013 MWP1, an ancient planetary nebula in Cygnus Image Credit & Copyright: Don Goldman, Astrodon Imaging (http://www.astrodonimaging.com) MWP1 (named after its discoverers C. Motch, K. Werner and M. Pakull) is a 150,000 years old, faint bipolar planetary nebula of about 15 light-years across, located some 4,500 light-years away in the northern constellation of [continue reading]

Magnetars are More Common than Thought

Magnetars are More Common than Thought

  Magnetars — the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation — are some of the most extreme objects known in the Universe. A major campaign using NASA’s Chandra X-ray Observatory and several other satellites shows magnetars may be more diverse — and common — than previously thought. This [continue reading]