This time-lapse image shows Comet ISON approaching and leaving during its slingshot around the sun – represented by the white circle -- on Nov. 28, 2013. The ISON images clearly outline the ...

On NASA's Comet ISON Observing Campaign website, astrophysicist Karl Battams writes that ISON was "born 4.5 billion BC, fragmented Nov. 28, 2013 (age 4.5 billion yrs old)." Then he adds this ...

Comet ISON on Nov. 16, 2013. Click to embiggen. Photo by Waldemar Skorupa, via CIOC and spaceweather.com Over the years we’ve had some pretty amazing comets swing by our planet. I remember the ...

The image above is of Comet ISON—technically named C/2012 S1 (ISON)—taken by friend-of-the-BA-blog Adam Block. ISON is a feisty little chunk of ice and rock currently making its way down to an ...

Comet ISON will be barely visible to the unaided eye when it is in the predawn night sky, positioned against the stars of Leo in October 2013. Breaking space news, the latest updates on rocket ...

published an obituary for the comet on Monday morning that made its end seem fairly official. “Tragically, on Nov. 28, 2013, ISON’s tenacious ambition outweighed its ability, and our shining ...

Comet ISON is expected to make its closest approach to the sun on Thursday, Nov. 28. This also happens to be Thanksgiving day. On its trip around the sun, ISON will come within 730,000 miles of ...

"If Comet ISON can survive perihelion passage ... Here's my top-10 list for 2013, plus some bonus picks from Space.com skywatching columnist Joe Rao: Jan. 2-3 for Quadrantid meteors: If ...

If the comet ISON makes it out intact from its encounter with the Sun this week, the Earth is in for a potentially dazzling sight in the December night skies as it passes close to Earth and out ...

"So sorry, everyone, but comet ISON is dead. Its memory lives on." Battams and other scientists at the meeting pointed to a cascade of devastating evidence. Amateur astronomers using powerful ...

[See Photos of Comet ISON in Night Sky] Comet ISON has brightened little, if at all, since the start of 2013, and when last seen was hovering at magnitude 15.5, making it nearly 4,000 times too ...

The window for the FORTIS launch begins on Nov. 19, 2013, just nine days before ISON sling shots around the sun to travel back out into space, unlikely to ever return. Indeed, the comet may not ...