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What happened to comet ISON?

Astronomers have long known that some comets like it hot. Several of the greatest comets in history have flown close to the sun, puffing themselves up with solar heat, before they became naked-eye wonders ...

Dec 05, 2013
4 / 5 (5) 0 | with audio podcast

NASA investigating the life of Comet ISON

After several days of continued observations, scientists continue to work to determine and to understand the fate of Comet ISON: There's no doubt that the comet shrank in size considerably as it rounded the ...

Dec 02, 2013
4.6 / 5 (8) 0 | with audio podcast

SOHO shows new images of Comet ISON

As Comet ISON heads toward its closest approach to the sun—known as perihelion—on Nov. 28, 2013, scientists have been watching through many observatories to see if the comet has already broken up under ...

Nov 27, 2013
5 / 5 (9) 5 | with audio podcast

Comet at dawn

(Phys.org) —Soon after its discovery in late summer of last year, the media hyped ISON to be the comet of the millennium. At the time when it is expected to come closest to the Sun, on 28 November 2013, ...

Nov 12, 2013
5 / 5 (13) 5 | with audio podcast

Fossil from the depths of the solar system

(Phys.org) —ISON is approaching the Sun. An international observation campaign which involves ground-based telescopes, space probes and space telescopes has been running for some time and is already providing ...

Nov 11, 2013
5 / 5 (11) 0 | with audio podcast

Tilted suns

(Phys.org) —The Earth's axis of rotation is tilted 23.4 degrees to its orbital motion around the Sun (more precisely, its spin axis has a tilt of 23.4 degrees with respect to the axis of its orbit). This ...

Nov 04, 2013
4.8 / 5 (13) 0 | with audio podcast

Sun continues to emit solar flares

After emitting its first significant solar flares since June 2013 earlier in the week, the sun continued to produce mid-level and significant solar flares on Oct. 27 and Oct. 28, 2013.

Oct 28, 2013
4 / 5 (5) 0 | with audio podcast

Kamikaze comet loses its head

Like coins, most comet have both heads and tails. Occasionally, during a close passage of the Sun, a comet's head will be greatly diminished yet still retain a classic cometary outline. Rarely are we left ...

23 hours ago
5 / 5 (4) 0