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The problem of explaining the existence of galaxies has proved to be one of the thorniest in cosmology. By all rights, they just shouldn’t be there, yet there they sit. It’s hard to convey the depth of frustration that this simple fact induces among scientists
James Trefil

Musique Valere Leroy

Publications

French Magazines

Ciel & Espace

N°437 (october 2006), p102

Saturn on January 25 2006 with the LX200 10"

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Astronomie Magazine

	N°98 (February 2008), "Observation" rubric, article "Saturne, la planète multiple", p25 Saturn on January 25 2006 with the LX200 10"
	N°87 (February 2007), "Observation" rubric, article "Saturne: un monde d'observations", p20 Saturn on April 6 2006 with the LX200 10"
	N°81 (July/August 2006), "Bravo!" rubric, p46 and 48 Saturn on January 25 & April 6 2006 with the LX200 10" Comments Zoom Images

Competitions

Astronomie Magazine

N°103 (July/August 2008), p88

Astronomie Magazine's competition in order to celebrate the 100th issue of this magazine.

prize number 11 (Baader Hyperion 8mm eyepiece)

The discovery of the planet Neptune was a triumph of mathematics. While studying the orbit of the planet Uranus, Urbain Leverrier realized that its perturbations suggested the presence of an unknown planet in an orbit beyond that of Uranus. Leverrier promptly calculated where the planet should be found. On September 23, 1846, the astronomer Johann Galle (in Berlin) looked at the indicated spot - and discovered Neptune in less than an hour.