COBS NEWS Archive

May. 11, 2011

New Comet: C/2011 H1 (Lemmon)

IAUC nr.9206, issued on 2011, May 05, announced the discovery of an apparently asteroidal object (discovery magnitude 19.7) by Alex R. Gibbs on CCD images taken on April 26.3 with the Mt. Lemmon 1.5-m reflector. Gibbs suspected that this object might show slight cometary appearance.

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May. 05, 2011

Comet Elenin: Preview of a Coming Attraction

You may have heard the news: Comet Elenin is coming to the inner-solar system this fall. Comet Elenin (also known by its astronomical name C/2010 X1), was first detected on Dec. 10, 2010 by Leonid Elenin, an observer in Lyubertsy, Russia, who made the discovery remotely using the ISON-NM observatory near Mayhill, New Mexico.

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Apr. 20, 2011

C/2011 C1 (McNaught)

It seems the past couple of years have seen a bright Comet McNaught and this year is no different. The 58th comet discovery by Rob McNaught and 74th from Siding Spring Observatory, C/2011 C1 was first seen on February 10th of this year.

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Apr. 07, 2011

Frozen Comets Watery Past: Discovery Challenges Paradigm of Comets as Dirty Snowballs Frozen in Time

For the first time, scientists have found convincing evidence for the presence of liquid water in a comet, shattering the current paradigm that comets never get warm enough to melt the ice that makes up the bulk of their material.

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Mar. 25, 2011

NASAs Venerable Comet Hunter Wraps Up Mission

At 33 minutes after 4 p.m. PDT today, NASAs Stardust spacecraft finished its last transmission to Earth. The transmission came on the heels of the venerable spacecrafts final rocket burn, which was designed to provide insight into how much fuel remained aboard after its encounter with comet Tempel 1 in February.

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Feb. 16, 2011

NASA Releases Images of Man-Made Crater on Comet

NASAs Stardust spacecraft returned new images of a comet showing a scar resulting from the 2005 Deep Impact mission. The images also showed the comet has a fragile and weak nucleus.

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Feb. 16, 2011

Comet Hunters First Images on the Ground

Mission controllers at NASAs Jet Propulsion Laboratory, Pasadena, Calif., have begun receiving the first of 72 anticipated images of comet Tempel 1 taken by NASAs Stardust spacecraft.

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Feb. 15, 2011

New bright comet C/2011 C1 (Mcnaught)

C/2011 C1 is the 58th comet found by Robert H. McNaught, the most prolific comet discoverer of all time. It was discovered on 2011, Feb. 10.71 with the 0.5-m Uppsala Schmidt telescope + CCD during the course of the Siding Spring Survey (E12).

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Feb. 15, 2011

The Two Faces of Tempel 1

Just one year before its Feb. 14 encounter with comet Tempel 1, NASAs Stardust spacecraft performed the largest rocket burn of its extended life. With the spacecraft on the opposite side of the solar system and beyond the orbit of Mars, the comet hunters rockets fired for 22 minutes and 53 seconds, changing the spacecrafts speed by 24 meters per second (54 mph).

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Feb. 15, 2011

NASAs Stardust Spacecraft Completes Comet Flyby

Mission controllers at NASAs Jet Propulsion Laboratory, Pasadena, Calif., watched as data downlinked from the Stardust spacecraft indicated it completed its closest approach with comet Tempel 1. An hour after closest approach, the spacecraft turned to point its large, high-gain antenna at Earth.

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