Comet dances with sun, death; giving mixed signals - WVVA TV Bluefield Beckley WV News, Weather and Sports

Comet dances with sun, death; giving mixed signals

Posted:
(AP Photo/NASA). In this photo provided by NASA, a contrast-enhanced image produced from the Hubble images of comet ISON taken April 23, 2013 reveals the subtle structure in the inner coma of the comet. (AP Photo/NASA). In this photo provided by NASA, a contrast-enhanced image produced from the Hubble images of comet ISON taken April 23, 2013 reveals the subtle structure in the inner coma of the comet.
(AP Photo/NASA, Aaron Kingery). In this photo provided by NASA, Comet ISON shows off its tail in this three-minute exposure taken on Nov. 19, 2013 at 6:10 a.m. (AP Photo/NASA, Aaron Kingery). In this photo provided by NASA, Comet ISON shows off its tail in this three-minute exposure taken on Nov. 19, 2013 at 6:10 a.m.
(AP Photo\NASA). In this photo provided by NASA, this Hubble Space Telescope image taken on Oct. 9, 2013 shows the comet ISON's solid nucleus. (AP Photo\NASA). In this photo provided by NASA, this Hubble Space Telescope image taken on Oct. 9, 2013 shows the comet ISON's solid nucleus.
  • More Local NewsMore Local NewsMore>>

  • UPDATE: Rail line reopens, derailment cleanup continues

    UPDATE: Rail line reopens, derailment cleanup continues

    ROCK (WVVA) - Crews were at the site of a train derailment in a remote area of Mercer County Wednesday. The derailment occurred Tuesday night in the Rock area -- near Montcalm -- across from Route 71..More >>
    ROCK (WVVA) - Crews were at the site of a train derailment in a remote area of Mercer County Wednesday. The derailment occurred Tuesday night in the Rock area -- near Montcalm -- across from Route 71.. More >>
  • Theatre W.Va. to return for 54th season

    Theatre W.Va. to return for 54th season

    BECKLEY, W.Va. (AP) -- Theatre West Virginia is preparing to return for its 54th season following a shutdown caused by financial problems.The Register-Herald reports that Theatre West Virginia has scheduled 17 performances of "Hatfields and McCoys" this season...More >>
    BECKLEY, W.Va. (AP) -- Theatre West Virginia is preparing to return for its 54th season following a shutdown caused by financial problems.The Register-Herald reports that Theatre West Virginia has scheduled 17 performances of "Hatfields and McCoys" this season...More >>
  • Woman guilty of four charges after running over employee

    Woman guilty of four charges after running over employee

    MERCER CO. (WVVA) - Dustie Beller was on trial for running over a woman with her car all for chainsaw. While she was found not guilty of attempted murder, the jury did find her guilty of petty larceny, conspiracy, failure to stop and render aid, and malicious wounding. The victim had this to say about the verdict. "Um very happy,” Mackenzie Ansley said. “To be expected -- the attempted murder charge. I knew coming into it, it was an iffy charge. And I'll take four out of five. And I'm happy w...More >>
    MERCER CO. (WVVA) - Dustie Beller was on trial for running over a woman with her car all for chainsaw. While she was found not guilty of attempted murder, the jury did find her guilty of petty larceny, conspiracy, failure to stop and render aid, and malicious wounding. The victim had this to say about the verdict. "Um very happy,” Mackenzie Ansley said. “To be expected -- the attempted murder charge. I knew coming into it, it was an iffy charge. And I'll take four out of five. And I'm happy w...More >>

WASHINGTON (AP) - Comet ISON is teasing the solar system as it dances with the sun and it's giving astronomers mixed signals.

Will it meet a fiery death - or survive - when it whips around the sun on Thursday?

The icy comet will be only about 1 million miles away from the sun's super-hot surface during its close encounter on Thanksgiving. On Monday, it looked like it was about to die even before it got there. On Tuesday, it appeared healthy again.

"We have never seen a comet like this," Naval Research Laboratory astrophysicist Karl Battams said during a NASA news conference Tuesday. "It has been behaving strangely."

Because it is so close to the sun, ISON (EYE'-sahn) will likely not be visible from Earth on Thursday - except via a fleet of NASA telescopes and spacecraft aimed at the comet as it gets closest to the sun at 1:37 p.m. EST, he said. And it will be a few hours before scientists know whether the comet survives.

But even if the comet dies, Johns Hopkins University scientist Carey Lisse said there's a good chance that people on Earth will get an interesting cosmic show. The comet's remnants could paint the sky with a wide swath of green in the Northern Hemisphere.

Lisse gives the comet a 30 percent chance of surviving, adding that it is just a gut-feeling that has little to do with logic. Logically, it should be 50-50, he said.

The comet - two-thirds of a mile wide - is made up of loosely packed ice and dirt, essentially a dirty snowball. It is a "dinosaur bone," from the formation of the solar system 4.5 billion years ago, Lisse said. It has been in "deep freeze" for billions of years in the Oort cloud, a vast area of comets and debris that never formed into planets that's between 450 billion and 9 trillion miles from the sun, he said.

The comet is racing around the sun, pulled close by our star's massive gravity, which can also break apart the dirty icy core.

Comet ISON was first spotted by a Russian telescope in September last year. While many comets come out of the Oort cloud and return after a long trip through the solar system and many comets graze by the sun, this is the first one that astronomers have watched that is from the Oort cloud and is skimming the sun.

Lisse said ISON could behave just like last year's comet Lovejoy, which fell apart a couple days after passing by the sun. Its remnants were visible like "a beautiful paintbrush swath in the sky" in the Southern Hemisphere, he said.

Unlike many blue comets, ISON has been more lime-green because it doesn't seem to have as much carbon monoxide as other comets, Lisse said.

If the comet does make it around the sun intact and returns past Earth, the Northern Hemisphere should get good naked-eye views just before sunrise and just after sunset in the first couple weeks of December, Lisse said. But this probably won't be as bright and visible as 1997's Comet Hale-Bopp, said Geoff Chester of the U.S. Naval Observatory in Washington.

Over the last few weeks, the reports weren't good for ISON's survival. On Monday, astronomers at Kitt Peak Observatory "were a little bit worried and depressed" because the comet produced a classic sign of flaming out, Lisse said from the Arizona telescope. Earlier, astronomers thought it may have broken up.

Then on Tuesday, a solar telescope spotted the comet and it was growing brighter just as it should have.

"It's a wild ride, this comet," Lisse said. "The reports of ISON's demise have been greatly exaggerated for the last month or two and ISON continues to surprise us."

Powered by WorldNow
All content © Copyright 2000 - 2014 WorldNow and WVVA.
All Rights Reserved. For more information on this site, please read our Privacy Policy, Terms of Service and Mobile Privacy Policy & Terms of Service.

Persons with disabilities who need assistance with issues relating to the content of this station's public inspection file should contact Administrative Assistant Audrey Sluss at (304) 324-0659. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, at 888-835-5322 (TTY) or at fccinfo@fcc.gov.