Visitors Now: | |
Total Visits: | |
Total Stories: |
Photo Credit Comet ISON is expected to pass within 2.8 kilometers of the sun. Astronomers aren’t sure if it could survive the heat.
Stargazers hope for clear skies as the solar system’s newest comet makes its cosmic debut.
The green comet ISON, or C/2012 S1 grew brighter this week, raising expectations it could give the most spectacular light show since Hale-Bopp, in 2005.
While comet behavior can be difficult to predict, some astronomers believe the size of the comet, and a trajectory within a hair of the sun could make for an amazing display – if it passes the sun without being burned up.
When interstellar gravitational forces disturb the “Oort cloud” of primordial cosmic material beyond Pluto, it can send a ball of the material hurtling toward the sun.
A comet is born. Comets are frozen masses of space dust, liquid and gases. Once warmed by the sun, the material thaws, creating a showy tail of sunlit debris.
“This is the first time this comet has come by,” said Bill Weller, a Nanaimo Astronomy Society director.
On Nov. 28, ISON will nearly touch the sun’s 5,600-degree Celsius surface.
“It will be 2.8 kilometers from the sun,” Weller said.
Astronomers don’t know if the 5,000-kilometre ball will survive the heat.
“That’s open to speculation right now,” Weller said.
Should it survive, the comet will be most visible in the morning sky, and will be closest to Earth on Dec. 26, 4.5 million kilometers.
Because of this, some call ISON the Christmas comet.
It’s now visible with good binoculars at a point almost in line with the Big Dipper’s handle.
Published on Nov 19, 2013
Will Ison be able to hold together?
Published on Nov 19, 2013
BREAKING NEWS: COMET ISON — LAST CHANCE — 19 NOV 2013
(BEST SEEN, FULL SCREEN!)
Do your research. There is no way Ison gets as close as 2.5 km from the sun without being vaporized. The actual distance at perihelion is 1,860,000 km
or 724,000 miles