STEREO - Nightly In-situ and radio Space Weather Forecast Center | Scientific Frontline SOLARHAM.com / Solar Cycle 24 / Spaceweather / Amateur Radio VHF Aurora Website - Nightly COR 1 Instrument A very large and bright prominence erupted off the surface of the Sun around 19:00 UT on August 31, 2012 and just kept going. This video from the STEREO Behind spacecraft shows the prominence and the coronal mass ejection (CME) in which its is embedded as it leaves the Sun (orange, EUVI) and travels through the fields of view of COR1 (green), COR2 (red), and HI1 (blue) telescopes before it finally disappears from HI1 around the end of September 2, still clearly visible more than two days after it erupted. While CMEs are routinely seen in the Heliographic Imager (HI) telescopes, it's very rare for prominences to stay visible for so long. The HI1 field of view ranges from 4 to 24 degrees away from the Sun. To get a sense of scale, we know the Sun is roughly 860,000 miles wide-and look how far the prominence holds together. Also visible in the movie is the planet Venus, which appears as a bright spot on the right side of the COR2 field. View
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids - Nightly The S0s - Your Mind is Your Weapon Comet ISON: Recovered! | Comet ISON Observing Campaign [Please note: this article was submitted AUGUST 12, 2013... not December 8, 2013. I realize the above mm/dd/yy date format is confusing to those that use the dd/mm/yy format. Sorry!] Well this is rather exciting news: Comet ISON lives on! For several weeks now, ground-based observers have been blind to Comet ISON as our local star was sitting directly between us and the comet. Is this what we think it is?! The above image was recorded by amateur astronomer Bruce Gary using his 11-inch telescope at Hereford Arizona Observatory, and show Comet ISON planted firmly between two very slightly different predictions for it's current location in space exactly where predicted! If it looks like a duck, and quacks like a duck... Motion analysis seems to hint that this object moves very much the way we expect ISON to be moving... Thankfully, Bruce is clearly an experienced and diligent observer, and has already taken it upon himself to begin a motion analysis to answer this very question!