jul 082014
 
Anne's Image of Today: Spiral Galaxy NGC 300

  July 8, 2014 NGC 300, a spiral galaxy in Sculptor Image Credit & Copyright: ESO NGC 300 is a spiral galaxy that lies around 6.07 million light-years away from Earth in the southern constellation of Sculptor, while it is receding from us at about 144 kilometers per second. It is some 47 thousand light-years across, [continue reading]

okt 182013
 
Anne's Image of the Day: Spiral Galaxy NGC 7793

October 18, 2013 NGC 7793, an unbarred spiral galaxy in Sculptor Image Credit: ESO NGC 7793 (sometimes called Bond’s Galaxy) is an unbarred spiral galaxy of some 34,000 light-years across, located about 12.7 million light-years away from Earth in the small southern constellation Sculptor. It is receding form us at roughly 230 kilometers per second. [continue reading]

okt 072013
 
Anne's Image of the Day: Spiral Galaxy NGC 300

October 7, 2013 NGC 300, a spiral galaxy in Sculptor Image Credit & Copyright: J-P Metsävainio (http://astroanarchy.zenfolio.com) NGC 300 is a spiral galaxy that lies around 6.07 million light-years away from Earth in the southern constellation of Sculptor, while it is receding from us at about 144 kilometers per second. It is some 47 thousand [continue reading]

mei 052013
 
The Birth of a Black Hole Not as Boring as Thought

  A new kind of cosmic flash may reveal something never seen before: the birth of a black hole.   When a massive star exhausts its fuel, it collapses under its own gravity and produces a black hole, an object so dense that not even light can escape its gravitational grip. According to a new [continue reading]

mrt 222013
 
Anne's Picture of the Day: Ring Galaxy NGC 922

March 22, 2013 NGC 922, a ring-shaped spiral galaxy in Fornax Image Credit: NASA, ESA; Acknowledgement: Nick Rose NGC 922 is a barred spiral galaxy of about 73,000 light-years across, located some 157 million light-years away from Earth toward the southern constellation of Fornax (the Furnace). It is speeding away from us at approximately 3063 [continue reading]

mrt 022013
 
The Mysterious Structure of a Stellar-Mass Black Hole

  Like an immense donut (or toroid) that expands daily. That’s how Jesús Corral-Santana, a researcher at the Instituto de Astrofísica de Canarias (IAC), describes the odd – hitherto unknown – structure of the binary system Swift J1357.2-0933, consisting of a ‘normal’ star and a stellar-mass black hole (which feeds off its companion star). The [continue reading]